Invention Grant
- Patent Title: Reflecting signal
- Patent Title (中): 反射信号
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Application No.: US16470027Application Date: 1927-01-31
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Publication No.: US1658265APublication Date: 1928-02-07
- Inventor: RALPH THOMPSON
- Applicant: RALPH THOMPSON
- Assignee: Thompson Ralph
- Current Assignee: Thompson Ralph
- Priority: US16470027 1927-01-31
- Main IPC: G09F13/16
- IPC: G09F13/16
Public/Granted literature
Information query
