Invention Grant
- Patent Title: Teletypewriter switching system
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Application No.: US28440439Application Date: 1939-07-14
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Publication No.: US2238142APublication Date: 1941-04-15
- Inventor: ALLAN WEAVER
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US28440439 1939-07-14
- Main IPC: H04L5/14
- IPC: H04L5/14
Information query
