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| All Patents in class 290/17 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,434,413 | Jan. 13, 1948 | J.E. Justus | Control Means for Diesel-Electric Locomotives | diesel locomotives | |
| 2,598,124 | May 27, 1952 | J.K. Stotz, G.T. Holt | Power Plant Regulation | power plants | |
| 2,617,970 | Nov. 11, 1952 | E.J. Justus | Traction Motor Control | diesel locomotives | |