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| All Patents in class 81/169 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,401,956 | Jan. 03, 1922 | W.L. Bonnell | Wrench | ||
| 1,615,440 | Jan. 25, 1927 | J. Cottrel | Wrench | screw adjust wrenches | |
| 1,639,831 | Aug. 23, 1927 | J. Zilliox | Wrench | wrench adjustment locks | |
| 1,683,201 | Sep. 04, 1928 | E. Lindquist | Sliding-Jaw Wrench | wrench handle components | |
| 1,946,669 | Feb. 13, 1934 | L.R. Boos | Wrench | screw adjust wrenches | |
| 2,304,072 | Dec. 08, 1942 | L.R. Boos, J.B. Boos | Wrench | screw adjust wrenches | |