Invention Grant
- Patent Title: Telephone system
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Application No.: US24071838Application Date: 1938-11-16
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Publication No.: US2232371APublication Date: 1941-02-18
- Inventor: DEHN JOSEPH W , OSCAR MYERS
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US24071838 1938-11-16
- Main IPC: H04Q3/00
- IPC: H04Q3/00
Information query
