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All Patents in class 318/819 | |||||
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Picture | Number | Date | Patentee | Title | |
735,118 | Aug. 04, 1903 | W. Langdon-Davies, A. Soames | Polyphase Alternating Current Induction Motor | ||
![]() | 745,772 | Dec. 01, 1903 | D.M. Bliss | Induction-motor |