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| Patents for Algot T. Johnson | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,378,775 | Jun. 19, 1945 | A.T. Johnson | Screw Driver | screwdriver mechanisms | |
| 3,114,401 | Dec. 17, 1963 | A.T. Johnson | Hand Tools of the Nature of Screwdrivers, Socket Wrenches and the Like | screwdriver mechanisms | |