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| Patents for Robert D. Shafer | |||||
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| Number | Date | Patentee | Title | Type | |
| 545,424 | Aug. 27, 1895 | F.L. Felger, R.D. Shafer | Pipe Wrench | pipe wrenches | |
| D26,766 | Mar. 16, 1897 | R.D. Shafer | Design For A Wrench | wrenches | |