Anti-vandalism detector and alarm system
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United States of America Patent
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-
Nov 21, 2000
Grant Date -
N/A
app pub date -
Mar 30, 1998
filing date -
Mar 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An anti-vandalism detection and alarm system is disclosed for detecting and reporting the scratching of relatively hard materials such as glass and plastic which generate characteristic sound or vibration frequencies during scratching, and for detecting and reporting the cutting and slashing of relatively soft materials such as fabric, leather and plastic.
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