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| All Patents in class 403/375 | |||||
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| Number | Date | Patentee | Title | Type | |
| 97,455 | Nov. 30, 1869 | A. Stanley | Bit-stock | brace chucks | |
| 280,099 | Jun. 26, 1883 | J.J. Tower | Pipe Wrench | wrench jaw components | |
| 846,248 | Mar. 05, 1907 | W.A. Schmalz | Folding square | squares | |