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| All Patents in class 74/665B | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,366,272 | Jan. 02, 1945 | R.G. Tourneau | Crank press | lever presses | |
| 2,771,790 | Nov. 27, 1956 | F.E. Munschauer | Double drive power punch press | punch presses | |
| 3,458,881 | Aug. 05, 1969 | J.L. Martin, E.F. Drechsler | Machine Tool Variable Power Transmission | milling machines | |