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| All Patents in class 192/69 | |||||
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| Number | Date | Patentee | Title | Type | |
| 15,145 | Jun. 17, 1856 | J.T. Noye | Clutch for flour-packers | packing and packaging machines | |
| 1,156,904 | Oct. 19, 1915 | H.L. Johnston | Clutch mechanism for grinders and choppers | food grinders | |