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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
B61F15/00—Axle-boxes
B61F15/12—Axle-boxes with roller, needle, or ball bearings
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FR335364D1903-09-181903-09-18Perfectionnements apportés aux mécanismes antifriction pour voitures de chemins de fer et autres véhicules
ExpiredFR335364A
(fr)