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| Patents for Otto P. Froeschl | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,800,447 | Apr. 14, 1931 | O.P. Froeschl | Pliers | pliers | |
| 2,201,827 | May 21, 1940 | P.A. Froeschl, O.P. Froeschl | Ratchet Mechanism | ratchet wrenches | |