Invention Grant
- Patent Title: Speed-controlling device for motors
- Patent Title (中): 电机调速装置
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Application No.: US25993218Application Date: 1918-10-28
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Publication No.: US1380134APublication Date: 1921-05-31
- Inventor: COOK JOEL R
- Applicant: DOMESTIC ELECTRIC COMPANY
- Assignee: Domestic Electric Company
- Current Assignee: Domestic Electric Company
- Priority: US25993218 1918-10-28
- Main IPC: F16D51/10
- IPC: F16D51/10 ; F16D65/14 ; H02K7/102
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