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| All Patents in class 74/334 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,774,250 | Dec. 18, 1956 | K.F. Gallimore | Multi Speed Transmission for Machine Tools | metalworking power transmission | |
| 2,811,053 | Oct. 29, 1957 | J.H. McKewen | Pre Select Hydraulic Shifting Means | hydraulic apparatus | |
| 2,992,565 | Jul. 18, 1961 | K.A. Riedel, J.A. Hansen | Automatic Speed Change Mechanism | milling machines | |
| 3,117,658 | Jan. 14, 1964 | C.L. Schulte, K.G. Byar, W.G. Hoelscher | Hydraulically Operated Transmission System | hydraulic apparatus | |