Invention Grant
- Patent Title: Signaling system
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Application No.: US4759835Application Date: 1935-10-31
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Publication No.: US2113221APublication Date: 1938-04-05
- Inventor: PULLIS GEORGE A
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US4759835 1935-10-31
- Main IPC: H04Q1/446
- IPC: H04Q1/446
Information query
