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| All Patents in class 310/240 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 335,863 | Feb. 09, 1886 | J. Weis | Electric Motor | ||
 | 1,698,799 | Jan. 15, 1929 | G.H. Leland | Brush-lifting mechanisms for electric motors or the like | |
 | 1,756,692 | Apr. 29, 1930 | G.H. Leland | Brush-lifting mechanism for electric motors and the like | |
| 1,764,709 | Jun. 17, 1930 | G.R. Anderson | Brush lifter for electric motors | ||
 | 2,556,573 | Jun. 12, 1951 | S.S. Brown | Electric motor | |
 | 2,685,667 | Aug. 03, 1954 | S.S. Brown | Electric motor and method of operation | |