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B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
B62M7/00—Motorcycles characterised by position of motor or engine
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FR934722D1946-10-101946-10-10Dispositif d'entraînement à changement de vitesse progressif pour cycles et véhicules légers
ExpiredFR934722A
(fr)