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| Patents for C. H. Curtis | |||||
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| Number | Date | Patentee | Title | Type | |
| 563,049 | Jun. 30, 1896 | D. Metcalfe | Pipe Wrench | pipe wrenches | |
| 991,681 | May 09, 1911 | C.A. Winchenbach | Carriage wrench | axle nut wrenches | |