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| Patents for Walter S. Phelps | |||||
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| Number | Date | Patentee | Title | Type | |
| 38,060 | Mar. 31, 1863 | W.S. Phelps | Wrist Pin Turner | wrist pin lathes | |
| 570,050 | Oct. 27, 1896 | W.S. Phelps | Compound Feed Motion for Boring Cylinders | metal lathe accessories and attachments | |