Invention Grant
- Patent Title: Electromagnetic variable-speed mechanism.
- Patent Title (中): 电磁变速机构。
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Application No.: US1902135950Application Date: 1902-12-20
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Publication No.: US865997APublication Date: 1907-09-17
- Inventor: CHURCHWARD ALEXANDER
- Applicant: GEN ELECTRIC
- Assignee: Gen Electric
- Current Assignee: Gen Electric
- Priority: US1902135950 1902-12-20
Information query
