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| Patents for W. H. Cotton | |||||
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| Number | Date | Patentee | Title | Type | |
| 695,661 | Mar. 18, 1902 | A.K. Theibault | Caliper Gage | trammels | |
| 725,019 | Apr. 14, 1903 | J. Armstrong | Tool Holder | lathe tool holders and tool posts | |
| 745,758 | Dec. 01, 1903 | S. Welter, J. Armstrong | Slotting Machine Tool Holder | slotting machine tool holders | |
| 884,751 | Apr. 14, 1908 | C.W. Birchwood, G.B. McBean | Repair Tool | valve spring tools | |