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| Patents for O. D. Levis | |||||
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| Number | Date | Patentee | Title | Type | |
| 178,712 | Jun. 13, 1876 | H. Bauer | Improvement in pressing-bars for molding-machines | molders | |
| 403,462 | May 14, 1889 | B.V. Crowe | Miter-machine | circular crosscut saws | |