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| All Patents in class 192/70.23 | |||||
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| Number | Date | Patentee | Title | Type | |
| 266,149 | Oct. 17, 1882 | A. Hendey | Hoisting Machine | ||
| 463,812 | Nov. 24, 1891 | A. Lesperance | Clutch | metalworking power transmission | |
| 1,272,081 | Jul. 09, 1918 | H.R. Nutting, A.B. Nutting | Clutch | industrial machine clutches | |
| 1,490,859 | Apr. 15, 1924 | F.H. Sleeper | Friction clutch | friction clutches | |
| 1,753,085 | Apr. 01, 1930 | J.L. Peterson | Clutch | drill presses | |