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| Patents for John L. Peters | |||||
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| Number | Date | Patentee | Title | Type | |
| 172,664 | Jan. 25, 1876 | D. Slate | Tool Holder for Metal Turning Lathes | lathe tool holders and tool posts | |
| 173,802 | Feb. 22, 1876 | T. McDonough | Improvement in Calipers and Dividers | calipers | |