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| Patents for Oliver N. May | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,043X | May 05, 1832 | O.N. May | Grist mill | grist mills | |
| 1,138 | Apr. 29, 1839 | O.N. May | Machine for planing or dressing sawed shingles | shingle machines | |