Used Motorized Decoiler for sale (22,578)

Condition: refurbished (used), functionality: fully functional, -KOM 3180- Isdpfjy H Hydex Apnsat Offered here is a fully overhauled motor spindle, type HSK-A-100, from Starrag Heckert AG. The spindle underwent comprehensive maintenance and testing in 2013 (test reports can be provided upon request). During inspection, no anomalies outside the tolerance range were identified. Furthermore, components such as seals, operational noise, and air circulation were thoroughly examined. The spindle is packed in a wooden crate and is ready for transport. The original purchase price of this spindle was approximately €80,000. Technical specifications: Manufacturer: Starrag Heckert Type: HSK-A-100 Spindle type: Motor spindle Material: Metal Max. speed: 15,000 rpm Clamping force: 47 kN (target range: 45–55 kN)

Condition: used, mileage: 542,418 km, power: 345 kW (469.07 HP), first registration: 04/2017, fuel type: diesel, number of seats: 55, gearing type: automatic, emission class: euro6, color: other, brakes: retarder, Year of construction: 2017, Equipment: ABS, air conditioning, cruise control, onboard kitchen, = Additional Options and Equipment = - DVD player - Air conditioning - Front refrigerator - Sleeper cab - Toilet - Webasto auxiliary heating = Further Information = Height: 370 cm Damage: None = Company Information = We are an international company based in Belgium, approximately 20 km from Brussels. Belgian Bus Sales is your ideal partner for the purchase and sale of used buses, offering an extensive parking area that serves as our exhibition space. We always have a large selection of buses of all brands, capacities, models, and price ranges in stock. We can find the right coach, school, or transit bus tailored to your needs or budget. All information is provided without guarantee. Subject to errors, prior sale, and typographical mistakes. Opening hours for viewing used buses: Monday to Friday: 08:30 - 12:00, 12:30 - 17:00. Mowimy po Polsku (Agata). We speak your language: Nederlands, Français, English, Español, Português, Italiano, Русский, Polski and more. Iasdpfx Aeycv D Njpnst

Condition: used, mileage: 243,867 km, power: 320 kW (435.08 HP), first registration: 02/2019, fuel type: diesel, number of seats: 61, gearing type: mechanical, emission class: euro6, color: other, brakes: retarder, Year of construction: 2019, Equipment: ABS, air conditioning, cruise control, navigation system, = Additional Options and Accessories = - DVD player - Air conditioning - Front refrigerator - Sleeper cab - Toilet - USB connections - Webasto heater = Further Information = Height: 370 cm Iaodpfx Aeyvf D Eepnot Damage: none = Company Information = We are an international company based in Belgium, located about 20 km from Brussels. Belgian Bus Sales is your ideal partner for the purchase and sale of used buses and features an extensive parking lot serving as a display area. We always have a wide selection of buses in stock from all brands, capacities, models, and price ranges. We can find the right coach, school, or city bus that suits your requirements and your budget. All information is provided without guarantee. Subject to errors, prior sale, and typographical mistakes. Opening hours for viewing used buses: Mon–Fri: 08:30–12:00, 12:30–17:00. Mówimy po polsku (Agata). We speak your language: Nederlands, Français, English, Español, Português, Italiano, Русский, Polski, and more.

Condition: new, power: 140 kW (190.35 HP), fuel type: diesel, number of seats: 21, gearing type: automatic, emission class: euro6, color: white, Year of construction: 2026, Equipment: ABS, air conditioning, parking heater, Available from February 2026 Iajdjy Dnggopfx Apnot

Condition: new, power: 140 kW (190.35 HP), fuel type: diesel, number of seats: 21, gearing type: automatic, emission class: euro6, color: white, Year of construction: 2026, Equipment: ABS, air conditioning, parking heater, Available for delivery from 02-2026 Ijdpsy Dngasfx Apnoat

Condition: good (used), power: 30 kW (40.79 HP), rotational speed (min.): 2,950 rpm, overall weight: 240 kg, 1 unit three-phase electric motor Item no.: Mot 52 Condition: used, tested and with functional guarantee Manufacturer: Siemens Ijdpfoy Emlqsx Apnoat Type: ILA2206-2AA60 Design: B3 Frequency: 50 Hz Power: 30 kW Voltage: 400 V Speed: 2950 rpm Weight: 240 kg

Condition: good (used), volume flow: 3.69 m³/h, power: 30 kW (40.79 HP), For sale is a tested radial fan from Pollrich, equipped with suction air control and a Siemens electric motor. Ijdpfxjy El Iwe Apnoat Technical data: • Manufacturer: Pollrich • Motor: Siemens 30 kW • Airflow: 3.69 m³/s • Pressure: 4800 Pa • Speed: 3277 rpm • Max. speed: 3340 rpm • Medium temperature: up to 60 °C The blower is mounted on a sturdy base frame and is suitable for industrial extraction, conveying air, or process air applications. Condition: used, tested Voltage: 3 x 400 Volts Speed: 2940 rpm

Condition: used, mileage: 216,985 km, power: 140 kW (190.35 HP), first registration: 08/2016, fuel type: diesel, number of seats: 30, gearing type: mechanical, next inspection (TÜV): 12/2026, emission class: euro6, color: white, brakes: retarder, Year of construction: 2016, Equipment: ABS, air conditioning, parking heater,

Condition: used, mileage: 42,500 km, power: 368 kW (500.34 HP), first registration: 06/2025, fuel type: diesel, number of seats: 53, gearing type: automatic, axle configuration: 6x2, overall weight: 26,000 kg, empty load weight: 17,724 kg, maximum load weight: 8,276 kg, fuel consumption (urban): 1,407 l/100km, emission class: euro6, color: red, suspension: air, tire size: 315/80 R22,5, total length: 14,070 mm, lifting height: 4,000 mm, Equipment: ABS, air conditioning, bathroom, cruise control, navigation system, parking heater, Unladen weight: 17,724kg, permissible total weight: 26,000kg, partial leather, tire size: 315/80 R22.5, 1st axle: , 2nd axle: , 3rd axle: , interior color black, air suspension, passenger compartment air conditioning, driver’s climate control, stop request buttons, luggage nets, leather steering wheel, electronic stability program (ESP), level control, kneeling function, multi-function display, radio, audio interface, sound system, power steering, tire pressure monitoring, carpet flooring, central locking with remote control, tinted windows, exterior mirrors electrically adjustable and heated, digital tachograph, electronic braking system (EBS), ski box holder, roof hatch, central lubrication, twin tires, brake assist, reversing camera, sun visor, toilet, speed limiter, TV, microphone, voltage converter, emergency brake assist, double glazing, digital radio reception (DAB), digital instrument cluster, left and right rear view cameras, non-binding offer, subject to errors and prior sale. The illustration may not correspond to the offer. Item number 192978651+1+1. Seats: three bench seats available for reconfiguration to 57+1+1. Languages: German, English. Ijdoyw Aw Tjpfx Apnsat

Condition: used, mileage: 940,314 km, power: 330 kW (448.67 HP), first registration: 01/2020, fuel type: diesel, number of seats: 55, gearing type: automatic, emission class: euro6, color: other, brakes: retarder, Year of construction: 2020, Equipment: ABS, air conditioning, cruise control, disability-friendly, = Additional Options and Equipment = - DVD player - Front refrigerator - Retarder - Wheelchair lift - Sleeper cabin - Toilet - USB connections Iajdpfoyhmb Nsx Apnet - Webasto heater = Further Information = Height: 370 cm Damage: none = Company Information = We are an international company based in Belgium, located in the vicinity of Brussels (+/-20 km). Belgian Bus Sales is your ideal partner for the purchase and sale of used buses, featuring a large parking lot that serves as a display area. We always have numerous buses of all brands, capacities, models, and price ranges in stock. We can find the right touring, school, or city bus to match your needs and budget. All information is provided without guarantee. Errors, prior sale, and typographical mistakes excepted. Hours for viewing used buses: Mon.-Fri.: 08:30 - 12:00, 12:30 - 17:00 Mowimy po Polsku (Agata) We speak your language: Nederlands, Français, English, Español, Português, Italiano, Русский, Polski and more.

Condition: used, mileage: 314,260 km, power: 320 kW (435.08 HP), first registration: 01/2018, fuel type: diesel, number of seats: 59, gearing type: automatic, emission class: euro6, color: other, brakes: retarder, Year of construction: 2018, Equipment: ABS, air conditioning, cruise control, trailer coupling, = Additional Options and Accessories = - DVD - Front refrigerator - Retarder - Sleeper cabin - Toilet - USB connections - Webasto heater = Further Information = Height: 370 cm Damages: none = Company Information = Iaodpfeyubdlox Apnet We are an international company based in Belgium, located near Brussels (+/-20 km). Belgian Bus Sales is your ideal partner for purchasing and selling used buses, featuring an extensive lot that serves as our display area. We always have a wide selection of buses in stock, from all brands, capacities, models, and price ranges. We can help you find the right coach, school, or city bus tailored to your requirements and budget. All information is provided without guarantee. Errors, prior sale, and typos excepted. Business hours for used bus inspections: Mon-Fri: 08:30 - 12:00 / 12:30 - 17:00. Mowimy po Polsku (Agata). We speak your language: Nederlands, Français, English, Español, Português, Italiano, Русский, Polski, and more.

Condition: used, mileage: 355,755 km, power: 291 kW (395.65 HP), first registration: 01/2017, fuel type: diesel, number of seats: 59, gearing type: automatic, emission class: euro6, color: other, brakes: retarder, Year of construction: 2017, Equipment: ABS, air conditioning, cruise control, trailer coupling, = Additional Options and Equipment = - DVD player - Air conditioning - Front refrigerator - Sleeper cab - Toilet - Webasto auxiliary heating Iaodpfxeyt Nlus Apnot = Further Information = Height: 370 cm Damage: None = Company Information = We are an international company based in Belgium, approximately 20 km from Brussels. Belgian Bus Sales is your ideal partner for the purchase and sale of used buses, offering an extensive parking area that serves as our exhibition space. We always have a large selection of buses of all brands, capacities, models, and price ranges in stock. We can find the right coach, school, or transit bus tailored to your needs or budget. All information is provided without guarantee. Subject to errors, prior sale, and typographical mistakes. Opening hours for viewing used buses: Monday to Friday: 08:30 - 12:00, 12:30 - 17:00. Mowimy po Polsku (Agata). We speak your language: Nederlands, Français, English, Español, Português, Italiano, Русский, Polski and more.

Condition: used, mileage: 842,921 km, power: 320 kW (435.08 HP), first registration: 05/2016, fuel type: diesel, number of seats: 59, gearing type: automatic, emission class: euro6, color: other, brakes: retarder, Year of construction: 2016, Equipment: ABS, air conditioning, cruise control, disability-friendly, = Additional Options and Equipment = Iaedpoyg Nbisfx Apnet - DVD - Air conditioning - Front refrigerator - Wheelchair lift - Toilet - USB connections - Webasto heater = Further Information = Height: 100 cm Damage: none = Company Information = We are an international company based in Belgium, located in the Brussels area (approximately 20 km away). Belgian Bus Sales is your ideal partner for the purchase and sale of used buses, featuring a large lot that serves as our exhibition area. We always have a wide selection of buses of all makes, capacities, models, and in every price range in stock. We can help you find the right coach, school, or transit bus tailored to your needs and budget. All information provided without guarantee. Subject to errors, prior sale, and typographical mistakes. Opening hours for viewing used buses: Mon-Fri: 08:30 - 12:00, 12:30 - 17:00. Mowimy po Polsku (Agata) We speak your language: Dutch, French, English, Spanish, Portuguese, Italian, Russian, Polish, and more.

Condition: used, mileage: 691,269 km, power: 300 kW (407.89 HP), first registration: 03/2014, fuel type: diesel, number of seats: 59, gearing type: automatic, emission class: euro5, color: other, brakes: retarder, Year of construction: 2014, Equipment: ABS, air conditioning, cruise control, = Additional Options and Equipment = - DVD player - Air conditioning - Front refrigerator - Sleeper cab Iedpfx Apex Sx Uwjnjat - Toilet - Webasto auxiliary heating = Further Information = Height: 370 cm Damage: None = Company Information = We are an international company based in Belgium, approximately 20 km from Brussels. Belgian Bus Sales is your ideal partner for the purchase and sale of used buses, offering an extensive parking area that serves as our exhibition space. We always have a large selection of buses of all brands, capacities, models, and price ranges in stock. We can find the right coach, school, or transit bus tailored to your needs or budget. All information is provided without guarantee. Subject to errors, prior sale, and typographical mistakes. Opening hours for viewing used buses: Monday to Friday: 08:30 - 12:00, 12:30 - 17:00. Mowimy po Polsku (Agata). We speak your language: Nederlands, Français, English, Español, Português, Italiano, Русский, Polski and more.

Condition: used, mileage: 602,506 km, power: 300 kW (407.89 HP), first registration: 01/2013, fuel type: diesel, number of seats: 55, gearing type: automatic, emission class: euro5, color: other, brakes: retarder, Year of construction: 2013, Equipment: ABS, air conditioning, cruise control, trailer coupling, = Additional Options and Equipment = - DVD player - Air conditioning - Front refrigerator - Sleeper cab - Toilet - USB connections - Webasto (auxiliary heater) = Further Information = Height: 360 cm Damage: none Iaodjx Ifpyspfx Apnot = Company Information = We are an international company based in Belgium, approximately 20 km from Brussels. Belgian Bus Sales is your ideal partner for the purchase and sale of used buses and offers an extensive lot that serves as a showroom. We always have a large selection of buses of all makes, capacities, models, and price ranges in stock. We can find the right coach, school, or city bus to suit your requirements and budget. All information is subject to change; errors, prior sale, and mistakes excepted. Inspection of used buses is possible during our opening hours: Mon-Fri: 08:30 - 12:00, 12:30 - 17:00. Mowimy po Polsku (Agata). We speak your language: Nederlands, Français, English, Español, Português, Italiano, Русский, Polski and more.

Condition: used, mileage: 644,916 km, power: 300 kW (407.89 HP), first registration: 03/2010, fuel type: diesel, number of seats: 51, gearing type: automatic, emission class: euro5, color: other, brakes: retarder, Year of construction: 2010, Equipment: ABS, air conditioning, cruise control, navigation system, = Additional Options and Equipment = - DVD player - Front refrigerator - Retarder - Sleeper cab - Toilet Iaodpsyh Ul Tsfx Apnet - Webasto heater = Further Information = Height: 380 cm Damage: none = Company Information = We are an international company based in Belgium, located approximately 20 km from Brussels. Belgian Bus Sales is your ideal partner for buying and selling used buses, featuring a large parking area that serves as our exhibition space. We always have a wide selection of buses from all manufacturers, with various capacities, models, and price ranges in stock. We can help you find the right coach, school, or city bus to match your needs and budget. All information provided without guarantee. Errors, prior sale, and typographical mistakes excepted. Used bus viewings are available during the following hours: Mon-Fri: 08:30 - 12:00, 12:30 - 17:00. Mówimy po polsku (Agata). We speak your language: Nederlands, Français, English, Español, Português, Italiano, Русский, Polski and more.

Condition: used, mileage: 334,598 km, power: 315 kW (428.28 HP), first registration: 03/2016, fuel type: diesel, number of seats: 50, gearing type: automatic, emission class: euro6, color: other, brakes: retarder, Year of construction: 2016, Equipment: ABS, air conditioning, cruise control, navigation system, onboard kitchen, = Additional Options and Equipment = - DVD player - Air conditioning - Front refrigerator - Toilet - USB connections - Webasto auxiliary heating = Further Information = Iedpjyhf Ubsfx Apnoat Height: 380 cm Condition: no damage = Company Information = We are an international company based in Belgium, located near Brussels (approximately 20 km). Belgian Bus Sales is your ideal partner for buying and selling used buses and offers a large parking area that serves as our showroom. We always have a wide range of buses from all brands, with various capacities, models, and price categories in stock. We can help you find the right coach, school bus, or city bus to suit your needs and budget. All information is given without guarantee. Subject to errors, prior sale, and typographical mistakes. Opening hours for viewing used buses: Mon-Fri: 08:30 am - 12:00 pm, 12:30 pm - 05:00 pm. We speak your language: Nederlands, Français, English, Español, Português, Italiano, Русский, Polski, and more. (Mowimy po Polsku Agata)

Condition: used, mileage: 734,779 km, power: 375 kW (509.86 HP), first registration: 06/2014, fuel type: diesel, number of seats: 56, gearing type: automatic, emission class: euro6, color: other, brakes: retarder, Year of construction: 2014, Equipment: ABS, air conditioning, cruise control, navigation system, onboard kitchen, trailer coupling, = Additional Options and Accessories = - DVD Iaodpfx Aoyg Nimspnst - Air conditioning - Front refrigerator - Sleeper cab - Toilet - USB connections - Webasto heater = Additional Information = Height: 100 cm Damage: none = Company Information = We are an international company based in Belgium, located near Brussels (approx. 20 km). Belgian Bus Sales is your ideal partner for the purchase and sale of used buses, offering an extensive lot that serves as a display area. We always keep a wide selection of buses of all makes, capacities, models, and price ranges in stock. We can help you find the right coach, school, or city bus tailored to your needs and budget. All information provided without guarantee. Subject to errors, prior sale, and typographical mistakes. Viewing of used buses is possible during business hours: Mon-Fri: 08:30 AM - 12:00 PM, 12:30 PM - 5:00 PM. Mowimy po Polsku (Agata). We speak your language: Dutch, French, English, Spanish, Portuguese, Italian, Russian, Polish, and more.

Condition: used, mileage: 549,347 km, power: 350 kW (475.87 HP), first registration: 05/2015, fuel type: diesel, number of seats: 66, gearing type: automatic, emission class: euro6, color: other, brakes: retarder, Year of construction: 2015, Equipment: ABS, air conditioning, cruise control, navigation system, = Further Options and Accessories = - DVD - Air conditioning Iodpsx S Iy Aefx Apnjat - Front refrigerator - Toilet - Webasto heater = Further Information = Height: 380 cm Damages: none = Company Information = We are an international company based in Belgium, located in the Brussels area (approx. 20 km). Belgian Bus Sales is your ideal partner for the purchase and sale of used buses and features a large parking area serving as a display site. We always have numerous buses from all brands, capacities, models, and in every price range in stock. We can find the right touring, school, or city bus for your needs and budget. All information provided without guarantee. Subject to errors, interim sale, and typographical mistakes. Visiting hours for used buses: Mon-Fri: 08:30 - 12:00, 12:30 - 17:00. Mówimy po polsku (Agata). We speak your language: Nederlands, Français, English, Español, Português, Italiano, Русский, Polski and more.

Condition: used, mileage: 644,809 km, power: 294 kW (399.73 HP), first registration: 12/2019, fuel type: diesel, number of seats: 51, gearing type: automatic, emission class: euro6, color: other, brakes: retarder, Year of construction: 2019, Equipment: ABS, air conditioning, cruise control, disability-friendly, = Additional Options and Equipment = - DVD - Air conditioning - Front refrigerator - Wheelchair lift Ijdpfx Aeydc Ikspnjat - Toilet - USB connections - Webasto heater = Further Information = Height: 370 cm Damage: None = Company Information = We are an international company based in Belgium, located near Brussels (+/- 20 km). Belgian Bus Sales is your ideal partner for buying and selling used buses and operates a large on-site parking area as a display lot. We always have a wide range of buses in stock, covering all brands, capacities, models, and price categories. We can help you find the right coach, school bus, or city bus tailored to your requirements and budget. All details are provided without guarantee. Subject to errors, prior sale, and typos. Opening hours for used bus viewings: Mon-Fri: 08:30 am - 12:00 pm, 12:30 pm - 05:00 pm. Mówimy po polsku (Agata). We speak your language: Nederlands, Français, English, Español, Português, Italiano, Русский, Polski, and more.

Condition: used, mileage: 564,198 km, power: 294 kW (399.73 HP), first registration: 03/2016, fuel type: diesel, number of seats: 57, gearing type: automatic, emission class: euro6, color: other, brakes: retarder, Year of construction: 2016, Equipment: ABS, air conditioning, cruise control, navigation system, = Additional options and equipment = - DVD - Air conditioning - Front refrigerator - Toilet - USB connections - Webasto heating system = Further information = Height: 370 cm Isdsyrgklopfx Apnjat Damage: None = Company information = We are an international company based in Belgium, near Brussels (+/-20 km). Belgian Bus Sales is your ideal partner for the purchase and sale of used buses, and offers a large parking area serving as a showroom. We always have numerous buses of all brands, capacities, models, and in every price category in stock. We can find the right coach, school, or transit bus tailored to your needs and budget. All information provided without guarantee. Subject to errors, prior sale, and typographical mistakes. Viewing hours for used buses: Mon.-Fri.: 08:30 - 12:00, 12:30 - 17:00 Mowimy po Polsku (Agata). We speak your language: Dutch, French, English, Spanish, Portuguese, Italian, Russian, Polish, and more.

Condition: used, mileage: 362,360 km, power: 294 kW (399.73 HP), first registration: 03/2015, fuel type: diesel, number of seats: 55, gearing type: automatic, emission class: euro6, color: other, brakes: retarder, Year of construction: 2015, Equipment: ABS, air conditioning, cruise control, = Additional Options and Equipment = - DVD player - Front refrigerator Iaodpjyb Ndmjfx Apnet - Retarder - Sleeper cab - Toilet - Webasto auxiliary heater = Further Information = Height: 370 cm Damage: none = Company Information = We are an international company based in Belgium, approximately 20 km from Brussels. Belgian Bus Sales is your ideal partner for the purchase and sale of used buses, offering a large parking area that serves as our display site. We always have a wide selection of buses from all manufacturers, with various capacities, models, and price ranges in stock. We can find the right coach, school, or line bus tailored to your needs and budget. All information is given without guarantee. Errors, prior sale, and typographical mistakes excepted. Opening hours for viewing used buses: Mon-Fri: 08:30 am - 12:00 pm, 12:30 pm - 5:00 pm. Mowimy po Polsku (Agata). We speak your language: Dutch, French, English, Spanish, Portuguese, Italian, Russian, Polish, and more.

Condition: used, mileage: 349,000 km, power: 130 kW (176.75 HP), first registration: 09/2007, fuel type: diesel, number of seats: 25, gearing type: mechanical, emission class: euro4, color: red, brakes: retarder, Year of construction: 2007, Equipment: ABS, air conditioning, bathroom, electronic stability program (ESP), onboard kitchen, parking heater, soot filter, Equipment: Auxiliary air conditioning, refrigerator, coffee bar, individual lighting, jet outlets, ABS, ASR, retarder, CD, footrests, tables, microphone, air conditioning, auxiliary heating, radio, central locking, double side windows, power steering, electric mirrors, reclining seats, auxiliary heating Additional description: 2nd hand, very well-maintained interior, extensive interior fittings, serviced vehicle. Iaedpfxoy Ifwqj Apnst Despite the greatest care, errors within the advertisement cannot be ruled out. We reserve the right to make errors and to sell the vehicle prior to sale!

Condition: ready for operation (used), Decoiler OBRU 1 to x 280 mm, coil-inside-diam. 290 - 570 mm, outside-diam. 1000 mm Iedpfx Apey Ni Amsnjat

Condition: used, mileage: 553,400 km, power: 320 kW (435.08 HP), first registration: 04/2016, fuel type: diesel, number of seats: 50, gearing type: automatic, emission class: euro6, color: white, brakes: retarder, Equipment: ABS, air conditioning, bathroom, electronic stability program (ESP), navigation system, onboard kitchen, parking heater, VDL Futura FHD2-129/440 4 identical vehicles available Vehicles from first owner, Swiss bus company In excellent maintenance and service condition! Vehicle 1: 637,700 km Vehicle 2: 553,400 km Vehicle 3: 656,400 km Vehicle 4: 648,200 km * DAF engine 320 kW Euro 6 * ZF AS-Tronic automated transmission * Clutch replaced on all vehicles at 400,000 km * Retarder * ESP, ABS, ASR * Adaptive cruise control * Lane departure warning system * 48+1+1 seats with leather side bolsters & headrests (Vogel seats) * Seats adjustable fore/aft and sideways, tables, nets, footrests * 2 refrigerators * Kitchen module prepped for coffee machine * 230 Volt power supply * WC * Service sets with air nozzles, reading lights & hostess call button * DVD video system with 2 flat screens (1 electric) * Panoramic front camera Iasdpfx Aoy Ii Rhepnot * Radio, CD MP3, microphone * 2 roof hatches * Video surveillance * Reversing camera * Multifunction steering wheel * Bluetooth hands-free system * Fog lights * Heated windscreen * Electrically adjustable, heated exterior mirrors * Air-suspended driver's seat, 3 cushions, armrests, seat heating * Lift/lower system, axle-wise * Second battery set for starting All information provided without guarantee Further info also via WhatsApp For info in Polish: WhatsApp Votre interlocuteur francophone : Georges Spengelin