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| Patents for George Bristol | |||||
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| Number | Date | Patentee | Title | Type | |
| 27,622 | Mar. 27, 1860 | J.H. Doolittle | Improved Pipe-Wrench | pipe wrenches | |
| 35,971 | Jul. 22, 1862 | J.H. Doolittle | Pipe Wrench | pipe wrenches | |