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Patents for James H. Bostwick | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 8,663 | Jan. 13, 1852 | A. Babbett, A. Sherwood | Turning prisms, &c. | |
![]() | 10,412 | Jan. 10, 1854 | W.G. Merrell | Machine for cutting ellipses |