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| All Patents in class 192/36 | |||||
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| Number | Date | Patentee | Title | Type | |
| 421,178 | Feb. 11, 1890 | W. Lewis | Machinery for Transmitting and Arresting Motion | clutches | |
| 2,016,806 | Oct. 08, 1935 | W.L. Schellenbach | Clutch | industrial machine clutches | |