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| Patents for Joseph Sill | |||||
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| Number | Date | Patentee | Title | Type | |
| 252,269 | Jan. 10, 1882 | J. Sill | Circular-saw guard | woodworking machine safety guards | |
| 302,041 | Jul. 15, 1884 | J. Sill | Saw-guard | woodworking machine safety guards | |