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| All Patents in class 192/69 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 15,145 | Jun. 17, 1856 | J.T. Noye | Clutch for flour-packers | |
| 1,156,904 | Oct. 19, 1915 | H.L. Johnston | Clutch mechanism for grinders and choppers | ||
| 1,822,697 | Sep. 08, 1931 | P.R. Hahnemann | Sheet-metal working machine | ||