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| All Patents in class 83/693 | |||||
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| Number | Date | Patentee | Title | Type | |
| 314,221 | Mar. 24, 1885 | C.M. Carnahan | Machine for Splitting Bars and Sheets of Iron or Steel | punch presses | |
| 1,531,287 | Mar. 31, 1925 | J. Jensen | Angle-Iron Notcher | metal punching machines | |
| 1,775,787 | Sep. 16, 1930 | U.F. Steindorff, H.J. Heller | Power-driven shears | metal shearing machines | |
| 3,277,763 | Oct. 11, 1966 | V.L. Haug | Notching Machine | notching machines | |
| 3,616,719 | Nov. 02, 1971 | R.B. Tassie | Notching sheet material | notching machines | |