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All Patents in class 409/257 | |||||
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Picture | Number | Date | Patentee | Title | |
2,024,254 | Dec. 17, 1935 | E.G. Roehm, M. Romaine | Broaching Machine | ||
![]() | 2,025,070 | Dec. 24, 1935 | E.E. Nygren | Metal cutting machine | |
![]() | 2,063,955 | Dec. 15, 1936 | B.P. Schiltz | Apparatus for machining metal parts |