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Patents for William S. Duvall | |||||
Number | Date | Patentee | Title | Type | |
310,908 | Jan. 20, 1885 | J.P. Herron, E. Morrison | Thickness Gage | thickness gages | |
478,121 | Jul. 05, 1892 | W.S. Duvall, W. Miller | Wrench | pipe wrenches | |
484,307 | Oct. 11, 1892 | W.S. Duvall, C.C. Fields | Wrench | quick adjust wrenches |