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| All Patents in class 137/799 | |||||
| Number | Date | Patentee | Title | Type | |
| 1,183,426 | May 16, 1916 | F. Booth | Tool-handle gearing | spiral screwdrivers | |
| 2,152,781 | Apr. 04, 1939 | D.D. Wile | Control Device | temperature controls | |