Security system
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United States of America Patent
Stats
-
Jun 1, 1982
Grant Date -
N/A
app pub date -
Mar 5, 1980
filing date -
Mar 7, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A security system in which a predetermined combination can be set by a operator to disable the system. An audible alarm is sounded when the entered combination differs from the correct combination by an error outside prescribed limits and a secondary alarm given when the error is within the limits.
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