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| All Patents in class 192/111.13 | |||||
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| Number | Date | Patentee | Title | Type | |
| 174,190 | Feb. 29, 1876 | D.W. Burnham | Pulley-Clutch | industrial machine pulleys and belt drive mechanisms | |
| 186,296 | Jan. 16, 1877 | A.B. Bean | Clutch | metalworking power transmission | |
| 423,333 | Mar. 11, 1890 | P. Medart | Friction Clutch | friction clutches | |
| 1,808,240 | Jun. 02, 1931 | C.G. Mahana | Power Transmission Means | industrial machine clutches | |