Keep call back device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 31, 1996
Grant Date -
N/A
app pub date -
Nov 18, 1994
filing date -
Mar 18, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A keep call back device for connecting calls between subscribers includes a first call establishing portion for establishing a first call by connecting a call received from a calling terminal to a called terminal when it recognizes the call from the calling terminal which is able to respond to a call from one terminal without ending communication with another terminal during communication with another terminal, a second call establishing portion for establishing a second call by placing a call to the calling terminal after the first call has been established, and a call releasing portion for releasing the first call by disconnecting the same when the second call is established.
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Cited Art Landscape
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