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| Patents for Century Electric Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 620,609 | Mar. 07, 1899 | F. Schwedtmann, E.S. Pillsbury | Motor | |
 | 718,518 | Jan. 13, 1903 | E.S. Pillsbury | Electric motor | |
 | 1,093,074 | Apr. 14, 1914 | E.S. Pillsbury | Electric motor | |
 | 1,122,633 | Dec. 29, 1914 | E.S. Pillsbury | Dynamo-electric machine | |
 | 1,130,017 | Mar. 02, 1915 | E.S. Pullsbury | Centrifugal circuit-changing device for electric motors | |
 | 1,157,179 | Oct. 19, 1915 | E.S. Pillsbury | Centrifugal circuit-changing device for electric motors | |