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| All Patents in class 7/170 | |||||
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| Number | Date | Patentee | Title | Type | |
| 844,043 | Feb. 12, 1907 | O.S. Perkins | Compound Tool and Tool Holder | tool holders | |
| 5,303,619 | Apr. 19, 1994 | W.C. Cole, Sr. | Wrench assembly for propane tanks and gas grills | auxiliary wrenches | |