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| Patents for Tronson Draper | |||||
| Number | Date | Patentee | Title | Type | |
| 363,994 | May 31, 1887 | T. Draper | Ball Turning Lathe | wood lathes | |
| 372,460 | Nov. 01, 1887 | T. Draper | Ball Turning Lathe | wood lathes | |