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| Patents for Jo Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,172,561 | Sep. 12, 1939 | F.P. Kruse | Wrench | torque wrenches | |
| 2,310,759 | Feb. 09, 1943 | I.C. Clawson | Drill with Adjustable Head | eggbeater drills | |