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| All Patents in class 74/473.33 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,209,469 | Jul. 30, 1940 | E.G. Roehm, L.F. Nenninger | Operating Control Mechanism for Milling Machines | milling machines | |
| 2,247,491 | Jul. 01, 1941 | H.E. Darby, H.C. Kemper, W.F. Groene | Transmission Shifter Mechanism | metalworking machine mechanisms | |