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| All Patents in class 200/10 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 524,396 | Aug. 14, 1894 | W.B. Potter | Controller for Electric Motors | |
 | 583,935 | Jun. 08, 1897 | F.E. Case, W.B. Potter | Series Parallel Controller | |
 | RE12,241 | Jul. 19, 1904 | W.B. Potter | Controller for Electric Motors | |
 | 882,602 | Mar. 24, 1908 | H.E. White | Controlling-Switch | |
 | 1,116,871 | Nov. 10, 1914 | D.M. Bliss | Method and means for reducing sparking in electrical apparatus | |