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| Patents for Emily F. Otis | |||||
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| Number | Date | Patentee | Title | Type | |
| 877,352 | Jan. 21, 1908 | H. Lund | Cylinder Wrench | ||
| 877,465 | Jan. 21, 1908 | H. Lund | Cylinder Wrench | cylinder tooth wrenches | |
| 878,657 | Feb. 11, 1908 | A. Munch | Ratchet Wrench | ||