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| Patents for Henry A. Mitchell | |||||
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| Number | Date | Patentee | Title | Type | |
| 32,347 | May 21, 1861 | H.S. Bartholomew | Improvement in Ball-Braces | fixed braces | |
| 121,895 | Dec. 12, 1871 | R. Porter | Bench Vise | bench vises | |
| RE7,263 | Aug. 15, 1876 | W.H. Barber | Improvements in Devices for Holding Bits and Other Tools ... | brace chucks | |
| 732,649 | Jun. 30, 1903 | H.A. Mitchell | Sawmill | sawmill accessories | |