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| All Patents in class 307/13 | |||||
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| Number | Date | Patentee | Title | Type | |
| 390,413 | Oct. 02, 1888 | N. Tesla | System of Electrical Distribution | ||
| 404,567 | Jun. 04, 1889 | O.B. Shallenberger | System of generators for alternating electric currents | electric distribution systems | |
| 1,072,422 | Sep. 09, 1913 | J. Burke | Electric controlling apparatus | motor controls | |
| 3,448,294 | Jun. 03, 1969 | R. Zechlin, R.M. Henry | Multiphase Power Switching Circuit | electronic circuitry and apparatus | |