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| Patents for Edward T. Warn | |||||
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| Number | Date | Patentee | Title | Type | |
| 573,732 | Dec. 22, 1896 | E.T. Warn | Ratchet Wrench | ratchet wrenches | |
| 671,461 | Apr. 09, 1901 | E.T. Warn | Chuck-wrench | ||