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| All Patents in class 192/106R | |||||
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| Number | Date | Patentee | Title | Type | |
| 295,656 | Mar. 25, 1884 | V.W. Mason | Friction Pulley | friction clutches | |
| 954,661 | Apr. 12, 1910 | A.W. Whitcomb | Power-transmission device | industrial machine clutches | |
| 1,272,081 | Jul. 09, 1918 | H.R. Nutting, A.B. Nutting | Clutch | industrial machine clutches | |
| 1,288,563 | Dec. 24, 1918 | W.F. Groene | Clutch | metalworking machine clutches | |