Key telephone system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 9, 1988
Grant Date -
N/A
app pub date -
May 28, 1987
filing date -
Jun 5, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A key telephone system comprising a key service unit and a plurality of key telephone sets is configured by this invention so as to permit use of IC cards which are adapted to admit user data for registration therein, to be inserted in any of the key telephone sets for the user data to be read out of the IC card, and to enable the user to utilize the key telephone set.
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Family
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Cited Art Landscape
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