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| Patents for Richard J. Welles | |||||
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| Number | Date | Patentee | Title | Type | |
| 167,717 | Sep. 14, 1875 | R.J. Welles | Improvement in Monkey-Wrenches | screw adjust wrenches | |
| 277,859 | May 15, 1883 | R.J. Welles | Countersinks for Chamfering Bits and Drills | countersinks | |