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| Patents for O. Seiffert | |||||
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| Number | Date | Patentee | Title | Type | |
| 598,897 | Feb. 15, 1898 | C. Bickel | Combination Wrench | quick adjust wrenches | |
| 601,723 | Apr. 05, 1898 | A. Werts | Pipe Wrench | chain and strap wrenches | |
| 613,573 | Nov. 01, 1898 | C. Jacoby, Sr. | Wrench | wrenches | |