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| All Patents in class 81/150 | |||||
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| Number | Date | Patentee | Title | Type | |
| 797,981 | Aug. 22, 1905 | W.O. Shobrook | Sliding Jaw Wrench | axle nut wrenches | |
| 886,084 | Apr. 28, 1908 | F.C. Miller, H.B. Sohn | Wrench | quick adjust wrenches | |
| 932,951 | Aug. 31, 1909 | A.R. Bell | Wrench | nut wrenches | |
| 972,604 | Oct. 11, 1910 | C.A. De Vaul | Wrench | quick adjust wrenches | |
| 1,003,999 | Sep. 26, 1911 | J. Egan | Wrench | quick adjust wrenches | |
| 1,251,934 | Jan. 01, 1918 | W.A. Steinmetz | Wrench | nut wrenches | |
| 2,168,257 | Aug. 01, 1939 | D.L. Farmer | Clamp | bar and pipe clamps | |