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| All Patents in class 73/862.321 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,394,022 | Feb. 05, 1946 | W. Storrie | Torque screw driver | screwdrivers | |
| 2,461,491 | Feb. 08, 1949 | R.E. Booth | Torque tool | screwdrivers | |