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