Invention Grant
- Patent Title: Duplex repeater system
- Patent Title (中): 双工中继器系统
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Application No.: US42639230Application Date: 1930-02-06
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Publication No.: US1841856APublication Date: 1932-01-19
- Inventor: TETER PAUL E
- Applicant: WESTERN UNION TELEGRAPH CO
- Assignee: Western Union Telegraph Co
- Current Assignee: Western Union Telegraph Co
- Priority: US42639230 1930-02-06
- Main IPC: H04L25/02
- IPC: H04L25/02
Information query
