Invention Grant
- Patent Title: Teletypewriter switching system
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Application No.: US22998438Application Date: 1938-09-15
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Publication No.: US2241258APublication Date: 1941-05-06
- Inventor: GARDNER LELAND A , SINGER FRED J , WATSON EDWARD F
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US22998438 1938-09-15
- Main IPC: H04L12/04
- IPC: H04L12/04
Information query
