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| Patents for T. A. Horstmann | |||||
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| Number | Date | Patentee | Title | Type | |
| 987,478 | Mar. 21, 1911 | H.J. Mitchell | Grinding and jointing appliance for planers | woodworking machine sharpening mechanisms | |
| 990,373 | Apr. 25, 1911 | H.J. Mitchell | Planer-knife sharpener | woodworking machine sharpening mechanisms | |
| 1,016,511 | Feb. 06, 1912 | H.J. Mitchell | Sandpaper-drum | sanding machines | |
| 1,030,912 | Jul. 02, 1912 | H.J. Mitchell | Bearing | woodworking machine bearings | |
| 1,113,463 | Oct. 13, 1914 | H.J. Mitchell | Adjusting device | wood planers | |