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| All Patents in class 81/404 | |||||
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| Number | Date | Patentee | Title | Type | |
| 495,793 | Apr. 18, 1893 | T. Fletcher | Wrench and Cutter | wrench combination tools | |
| 514,752 | Feb. 13, 1894 | E.A. Humphrey | Wrench | pipe and nut combination wrenches | |
| 561,274 | Jun. 02, 1896 | J.M. Palmer | Tongs for Turning Pipes | pipe tongs | |
| 611,499 | Sep. 27, 1898 | C.S. Metcalfe | Wrench | auxiliary levers on wrenches | |
| 800,814 | Oct. 03, 1905 | R.H. Martens | Wrench | wrench combination tools | |