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| All Patents in class 318/772 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,934,060 | Nov. 07, 1933 | J. Hanning | Fan motor | ||
| 2,253,599 | Aug. 26, 1941 | W.R. Appleman, J.V. Dalnodar, J.T. Howes | Electric motor | induction motors | |
| 3,207,967 | Sep. 21, 1965 | S.E. Athey | Multi-speed electric motor drive | ||