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| Patents for Charles P. Johnson | |||||
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| Number | Date | Patentee | Title | Type | |
| 883,887 | Apr. 07, 1908 | C.P. Johnson | Wrench | axle nut wrenches | |
| 957,214 | May 10, 1910 | C.P. Johnson | Adjustable Wrench | screw adjust wrenches | |