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| All Patents in class 192/47 | |||||
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| Number | Date | Patentee | Title | Type | |
| 310,848 | Jan. 13, 1885 | D.C. Prescott | Saw-mill set-works | sawmill set works | |
| 870,206 | Nov. 05, 1907 | V.J. Wahlstrom | Clutch | friction clutches | |
| 1,089,703 | Mar. 10, 1914 | I.E. Hindman | Friction clutch for screw-jacks | screw jacks | |