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| All Patents in class 318/58 | |||||
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| Number | Date | Patentee | Title | Type | |
| 273,490 | Mar. 06, 1883 | T.A. Edison | Electro Magnetic Railway System | ||
| 871,970 | Nov. 26, 1907 | E.W. Stull | System of motor control | electric railroads | |
| 1,016,794 | Feb. 06, 1912 | E.W. Stull | System of motor control | motor controls | |
| 1,773,712 | Aug. 19, 1930 | J.B. Wiard | Apparatus for controlling electric motors | electric motors | |