RADIO TELEPHONE SET

PURPOSE:To inform an operator of the subscriber telephone set of communicable time when a speech with the subscriber telephone set is performed through a central station. CONSTITUTION:A control part 11 indicates the generation of an alarm sound against an alarm sound generation part 14 before the el...

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Bibliographic Details
Main Author SHINGU KAZUMI
Format Patent
LanguageEnglish
Published 18.12.1992
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
TRANSMISSION
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