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| Patents for Wm. E. Simonds | |||||
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| Number | Date | Patentee | Title | Type | |
| 102,534 | May 03, 1870 | J.E. Gilman | Work Holder | vises | |
| 148,065 | Mar. 03, 1874 | E. Horton | Improvement in Calipers | calipers | |
| 157,566 | Dec. 08, 1874 | L. Bailey | Improvement in Hardening the Blades of Squares | squares | |
| 170,930 | Dec. 14, 1875 | L. Bailey | Improvement in safety rein holders | ||