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| All Patents in class 388/807 | |||||
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| Number | Date | Patentee | Title | Type | |
| 653,725 | Jul. 17, 1900 | D.C. Woodward | Electric Motor | electric motors | |
| 660,908 | Oct. 30, 1900 | B.G. Lamme | Variable-speed electric motor | DC motors | |