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Publication of BE334136ApublicationCriticalpatent/BE334136A/xx
B61G1/00—Couplings comprising interengaging parts of different shape or form and having links, bars, pins, shackles, or hooks as coupling means
B61G1/22—Couplings comprising interengaging parts of different shape or form and having links, bars, pins, shackles, or hooks as coupling means having screws incorporated in the links for lengthening or shortening the couplings