JPS53145408A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Telephone number display unit
Assignee: Mitsubishi Electric Corp
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Filing: 1977-05-24
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Granted: —
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Expires: 1997-05-24
Abstract
Abstract PURPOSE:To know the number of the caller at the called party side by securing an automatic transmission of the call number in accordance with the answering action of the called telephone, and thus to avoid the wrong calling as well as to enhance the special number service at the central telephone exchange.
Inventors
- 👤 Usaburo Doi
- 👤 Tetsuo Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-10-31 17:32
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/57
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
JPS5159208A
Cited
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