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All Patents in class 318/71 | |||||
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Picture | Number | Date | Patentee | Title | |
715,019 | Dec. 02, 1902 | F.E. Case | Means for Synchronizing Motors | ||
715,195 | Dec. 02, 1902 | F.E. Case | Method of Synchronizing Motors | ||
2,809,333 | Oct. 08, 1957 | E.K. Wagner | Constant Chip Thickness Motor Control System for Machine Tools |