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| All Patents in class 74/336.5 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,976,368 | Oct. 09, 1934 | F.A. Parsons | Transmission and Control Mechanism for Machine Tools | ||
| 2,493,299 | Jan. 03, 1950 | H.C. Kemper, R.K. Le Blond | Hydraulic Gear Shifting Mechanism | ||
| 2,902,873 | Sep. 08, 1959 | V.v. Sundt | Machine Tool Headstock Control Mechanism | ||
| 3,093,225 | Jun. 11, 1963 | H.R. Uhtenwoldt | Machine Tool Preselect Speed Change Mechanism | ||
| 3,159,043 | Dec. 01, 1964 | O. Hermann | Control Arrangement for a Shiftable Transmission | ||