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