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Patents for Henry H. McDougall | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 248,550 | Oct. 18, 1881 | G.C. Avery | Machine for cutting or dressing plow-handles | |
![]() | 252,712 | Jan. 24, 1882 | G.C. Avery | Bending plow-handles |