Amorphous antipilferage marker
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United States of America Patent
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-
Nov 12, 1985
Grant Date -
N/A
app pub date -
Feb 4, 1983
filing date -
Feb 4, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic theft detection system marker is adapted to generate magnetic fields at frequencies that (1) are harmonically related to an incident magnetic field applied within an interrogation zone and (2) have selected tones that provide the marker with signal identity. The marker is an elongated, ductile strip of amorphous ferromagnetic material having a value of magnetostriction near zero that retains its signal identity under stress.
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