Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1990-11-29
1992-05-05
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
Specific condition
361321, G08B 1318
Patent
active
051111861
ABSTRACT:
A resonant tag for an article surveillance system comprising a voltage dependent capacitance means whose capacitance can be varied with changes in voltage to selectively provide one or more resonant frequencies for the resonant tag.
REFERENCES:
patent: 5031144 (1991-07-01), Persky
Narlow Doug
Patterson Hubert A.
Sensormatic Electronics Corporation
Swann III Glen R.
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