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| Patents for William C. Redfield | |||||
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| Number | Date | Patentee | Title | Type | |
| 570,213 | Oct. 27, 1896 | G. Amborn, Jr. | Chain Wrench | chain and strap wrenches | |
| 570,214 | Oct. 27, 1896 | G. Amborn, Jr. | Chain Wrench | chain and strap wrenches | |
| 577,653 | Feb. 23, 1897 | G. Amborn, Jr., W.J. Grinden | Chain Wrench | chain and strap wrenches | |
| 577,654 | Feb. 23, 1897 | G. Amborn, Jr., W.J. Grinden | Chain Wrench | chain and strap wrenches | |
| 698,794 | Apr. 29, 1902 | G.W. Bufford | Chain Wrench | chain and strap wrenches | |