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| Patents for Theodore Coventry | |||||
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| Number | Date | Patentee | Title | Type | |
| 658,473 | Sep. 25, 1900 | T. Coventry, W.D. Smith | Chuck | metal lathe chucks | |
| 868,159 | Oct. 15, 1907 | T. Coventry | Bevel Wheel Shaping Machine | gear making machines | |
| 1,173,914 | Feb. 29, 1916 | T. Coventry, W. Anderson | Gear Cutting Machine | gear making machines | |