Dual timing circuit for telephone subscriber's instrument
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 8, 1985
Grant Date -
N/A
app pub date -
May 2, 1983
filing date -
May 2, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dual timing circuit for use with a subscriber's telephone circuit operated in response to two manual switch operations to simulate the placement of the subscriber's phone in the 'on-hook' condition for two different predetermined periods of time. One 'on-hook' period being for the operation of transfer circuitry in an associated PABX and the other period being for the initiation of a new call.
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Family
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Cited Art Landscape
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