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| Patents for Woodbury S. How | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 179,793 | Jul. 11, 1876 | W.S. How | Improvement in Dividers | |
 | 184,209 | Nov. 07, 1876 | W.S. How | Improvement in Mechanics' Gages | |
 | 184,210 | Nov. 07, 1876 | W.S. How | Improvement in Tool-Holders | |
| 185,105 | Dec. 05, 1876 | W.S. How | Tools and Tool Holders | ||