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| Patents for Charles B. Bristol | |||||
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| Number | Date | Patentee | Title | Type | |
| 13,120 | Jun. 26, 1855 | C.B. Bristol | Revolving Head Nut Wrench | nut wrenches | |
| 53,374 | Mar. 20, 1866 | A. Hatch | Improvement in Lathes | metal lathe accessories and attachments | |