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| All Patents in class 192/70.15 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 463,812 | Nov. 24, 1891 | A. Lesperance | Clutch | |
 | 520,528 | May 29, 1894 | E.L. Jones | Clutch | |
| 559,558 | May 05, 1896 | T.H. Worrall, A. Lesperance | Friction-clutch | ||
| 835,373 | Nov. 06, 1906 | H.R. Stacks | Friction-clutch | ||
 | 885,075 | Apr. 21, 1908 | D.S. Oakley | Clutch | |
 | 1,043,406 | Nov. 05, 1912 | R.J. Denio | Clutch | |
 | 1,327,506 | Jan. 06, 1920 | M. Walker | Magnetic clutch | |