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Patents for Ainsworth Brown | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 172,589 | Jan. 25, 1876 | H.D. Stover | Improvement in machines for cutting precious stones | |
![]() | 175,262 | Mar. 28, 1876 | H.D. Stover | Improvement in machines for polishing diamonds, &c. | |
![]() | 176,091 | Apr. 11, 1876 | H.D. Stover | Improvement in planing-machines |