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| Patents for L. E. Curtis | |||||
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| Number | Date | Patentee | Title | Type | |
| 602,106 | Apr. 12, 1898 | C.E. Roberts | Tool for dressing emery-wheels | grinder dressers | |
| 613,230 | Nov. 01, 1898 | F.W. Beckwith | Wrench | screw adjust wrenches | |