US1730864 Патенты
FRICTION SHOCK ABSORBING MECHANISM Filed April 14, 1927 FRICTION SHOCK ABSORBING MECHANISM UNITED STATES PATENT OFFICE JOHN F. O'CONNOR, OF CHICAGO, ILLINOIS, ASSIGNOR. To W. H. MINER, INC., OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE FRICTION SHOCK-ABSORBING MECHANISMI Application filed April 14, 1927. serial No. 183,681.
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