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| Patents for William E. Neff | |||||
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| Number | Date | Patentee | Title | Type | |
| 590,730 | Sep. 28, 1897 | C. Frantz, C.E. Swingle | Barrel Tapping Wrench | auxiliary wrenches | |
| 602,229 | Apr. 12, 1898 | G. Jeffryes, T.M. Righter | Pipe Wrench | chain and strap wrenches | |