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| Patents for Thomas Harper | |||||
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| Number | Date | Patentee | Title | Type | |
| 50,119 | Sep. 26, 1865 | T. Harper | Improvement in sawing-machines | circular sawmills | |
| 63,015 | Mar. 19, 1867 | W. Carlton | Improvement in head-blocks for sawmills | sawmill headblocks | |
| 505,221 | Sep. 19, 1893 | T. Harper | Machine for Buffing Metal Tubes | polishing machines | |