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| All Patents in class 318/773 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 606,056 | Jun. 21, 1898 | R.H. Hassler | Alternating-current electric motor | |
 | 892,656 | Jul. 07, 1908 | G.W. Euker | Controller for alternating-current motors | |
| 2,174,758 | Oct. 03, 1939 | C.A. Rall | Multispeed motor | ||
| 2,959,721 | Nov. 08, 1960 | O.I. Butler, T.H. Barton, H. Sterling | Multi-Phase Induction Motors | ||
| 4,091,294 | May 23, 1978 | F. Zankl, E.E. Kirkham, R.E. Stobbe, J.J. Schachte | A.C. Motor Control Apparatus and Method | ||