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| All Patents in class 192/105R | |||||
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| Picture | Number | Date | Patentee | Title | |
| 212,337 | Feb. 18, 1879 | T.A. Weston | Speed-Governor and Friction-Brake for Machinery | ||
| 682,591 | Sep. 10, 1901 | J.R. Harrison | Automatic Clutch Mechanism | ||