Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1987-11-25
1989-04-04
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
Specific condition
29 71, 140 66, 256 8, 340541, 340550, G08B 1312
Patent
active
048189723
ABSTRACT:
A helical barbed tape includes barbs with enhanced rigidity, as well as an electrical sensor wire extending along the length of the helical barbed tape so as to be capable of use in an electronic intrusion detection system to mechanically detect disturbances induced on the barbed tape or its supporting structure.
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"Intrusion Detection Systems", by Robert L. Barnard--1981--pp. 71-74.
Mainiero Michael R.
Zagami Anthony R.
Casella Anthony J.
Hespos Gerald E.
MRM Security Systems, Inc.
Swann III Glen R.
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