Protection circuitry for subscriber's telephone circuit equipped with repertory memory
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United States of America Patent
Stats
-
May 27, 1986
Grant Date -
N/A
app pub date -
Dec 5, 1983
filing date -
Dec 5, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A protective circuit for use in a subscriber's telephone circuit that includes a repertory memory and includes a battery which provides memory retention current. Circuitry permits the battery to be protected by a series current limiting resistor while maintaining sufficient voltage so that the memory maintains its integrity.
First Claim
Family
International Classification(s)
Cited Art Landscape
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