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| Patents for Joseph Witmer | |||||
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| Number | Date | Patentee | Title | Type | |
| 92,501 | Jul. 13, 1869 | J. Witmer | Improved Trestle | workbenches | |
| 288,147 | Nov. 06, 1883 | J. Witmer | Sawing attachment for planing-machines | wood planers | |