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| Patents for William Emerson | |||||
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| Number | Date | Patentee | Title | Type | |
| 122,609 | Jan. 09, 1872 | H.A. Holt | Improvements in Carpenters' Plane | bench planes | |
| 170,732 | Dec. 07, 1875 | H.A. Holt | Improvement in spoke-sockets | wheelwright | |