Invention Grant
- Patent Title: Telegraph signal repeater
- Patent Title (中): 电报信号中继器
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Application No.: US3852635Application Date: 1935-08-30
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Publication No.: US2123232APublication Date: 1938-07-12
- Inventor: CRAMER WALTER W
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US3852635 1935-08-30
- Main IPC: H04L25/04
- IPC: H04L25/04 ; H04L25/20
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