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| Patents for Otto A. Costello | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,748,624 | Jun. 05, 1956 | O.A. Costello | Rotary Table | rotary tables | |
| 2,769,349 | Nov. 06, 1956 | O.A. Costello | Disconnectable Worm Gearing | industrial machine gearing | |