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