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| All Patents in class 192/85.41 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,290,542 | Jul. 21, 1942 | W.W. Criley | Clutch | ||
| 2,862,589 | Dec. 02, 1958 | F.B. Porteous, J.A. Foster | Friction drive mechanism | ||