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| All Patents in class 72/28.1 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,766,711 | Oct. 16, 1956 | K.P. Martin, L.A. Dever | Press | ||
| 3,120,799 | Feb. 11, 1964 | H.B. Van Auken, J.J. Strnad | Platen-leveling control system for hydraulically-actuated brake presses | ||
| 3,124,017 | Mar. 10, 1964 | W.K. Behrendt, W.E. Brainard | Automatic Multiple Spindle Drilling Machine | ||
| 3,357,218 | Dec. 12, 1967 | C.L. Mitchell | Hydraulic Press | ||