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B61G3/00—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements
B61G3/16—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling heads rigidly connected by rotatable hook plates or discs and balancing links, the coupling members forming a parallelogram, e.g. "Scharfenberg" type
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FR403738D1908-06-091909-06-05Perfectionnements dans les systèmes d'attelage automatique pour véhicules de chemins de fer et autres analogues
ExpiredFR403738A
(fr)