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B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
B61F7/00—Rail vehicles equipped for use on tracks of different width
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FR898990D1943-02-171943-10-19Essieu pour wagons de chemin de fer de largeur de voie variable
ExpiredFR898990A
(fr)