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| Patents for H. J. Hoyt | |||||
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| Number | Date | Patentee | Title | Type | |
| 102,829 | May 10, 1870 | D. Kelly | Improvement in Boring Bits | drill bits | |
| 153,400 | Jul. 21, 1874 | J. Torrent | Improvement in saw-arbors | circular saws | |