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| All Patents in class 100/48 | |||||
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| Number | Date | Patentee | Title | Type | |
| 272,719 | Feb. 20, 1883 | W.J. Liddell | Hay and cotton press | cotton presses | |
| 1,945,496 | Jan. 30, 1934 | G.A. Highberg, H.E. Sloan | Press Actuating Mechanism | punch presses | |
| 4,148,203 | Apr. 10, 1979 | B.R. Everett, A. Farazandeh | Computer-controlled press brake | sheet metal brakes | |