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| Patents for Frank L. Entwisle | |||||
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| Number | Date | Patentee | Title | Type | |
| 404,769 | Jun. 04, 1889 | E.S. Boynton | Wrench | alligator wrenches | |
| 404,770 | Jun. 04, 1889 | E.S. Boynton | Improvement in Alligator-Wrenches | screw adjust wrenches | |