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| Patents for H. A. Doty | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 101,356 | Mar. 29, 1870 | H. Richardson, E. Doty | Improved machine for shearing metal | |
 | 102,924 | May 10, 1870 | E. Doty | Improvement in machines for punching metal | |
 | 120,532 | Oct. 31, 1871 | G. Pickering | Improvement in machines for turning wood | |