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| All Patents in class 81/325 | |||||
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| Number | Date | Patentee | Title | Type | |
| 186,925 | Feb. 06, 1877 | W. Dicks | Improvements in Adjustable-Grasp Wrenches | quick adjust wrenches | |
| 523,136 | Jul. 17, 1894 | G. Trakofler | Wrench | quick adjust wrenches | |
| 1,134,980 | Apr. 06, 1915 | I. Pfeiffer, Jr. | Pincers | pliers | |
| 1,214,448 | Jan. 30, 1917 | W. Francis | Frictional Pliers Lock For Twisting Wires | pliers | |
| 1,772,224 | Aug. 05, 1930 | W.A. Peterson | Pliers | locking pliers | |
| 2,691,317 | Oct. 12, 1954 | E.T. Olson | Locking Device For Pipe Wrenches | pipe wrenches | |