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| Patents for W. H. Maynard | |||||
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| Number | Date | Patentee | Title | Type | |
| 41,894 | Mar. 08, 1864 | H.S. Shepardson | Improvement in Countersinks | countersinks | |
| 44,225 | Sep. 13, 1864 | H.S. Shepardson | Improvement in Spirit-Levels | levels | |