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| Patents for Henry Otto | |||||
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| Number | Date | Patentee | Title | Type | |
| 101,114 | Mar. 22, 1870 | J. Faessler | Improvement in Screw-Wrenches | wrench jaw components | |
| 160,946 | Mar. 16, 1875 | H. Otto | Pipe-Wrench | pipe wrenches | |