Invention Grant
- Patent Title: Surface-contact system.
- Patent Title (中): 表面接触系统。
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Application No.: US1904217600Application Date: 1904-07-22
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Publication No.: US812725APublication Date: 1906-02-13
- Inventor: CASE FRANK E
- Applicant: GEN ELECTRIC
- Assignee: Gen Electric
- Current Assignee: Gen Electric
- Priority: US1904217600 1904-07-22
Information query
