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Patents for C. H. Seem | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 752,650 | Feb. 23, 1904 | F.P. Burkhardt, F. Streich | Surfacing and jointing machine | |
![]() | 998,616 | Jul. 25, 1911 | H.S. Jewell, F.C. Jewell | Trammel head |