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All Patents in class 192/85.47 | |||||
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Number | Date | Patentee | Title | Type | |
928,679 | Jul. 20, 1909 | A.G. Mather | Variable-speed mechanism | industrial machine pulleys and belt drive mechanisms | |
2,538,997 | Jan. 23, 1951 | J.N. Weiland | Fluid clutch with pressure booster | metalworking power transmission |