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| Patents for Edwin A. Robbins | |||||
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| Number | Date | Patentee | Title | Type | |
| 214,455 | Apr. 15, 1879 | E.A. Robbins | Carriage-Wrench | axle nut wrenches | |
| 227,304 | May 04, 1880 | E.A. Robbins | Carriage-Wrench | axle nut wrenches | |
| 257,072 | Apr. 25, 1882 | E.A. Robbins | Carriage Wrench | axle nut wrenches | |
| 269,234 | Dec. 19, 1882 | E.A. Robbins | Pipe Wrench | pipe wrenches | |