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| All Patents in class 29/893.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 79,605 | Jul. 07, 1868 | A. Sibley | Machine Gearing | industrial machine gearing | |
| 1,453,709 | May 01, 1923 | C.L. Heisler | Gearing | industrial machine gearing | |