The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 1992
Filed:
Jul. 29, 1988
Applicant:
Inventors:
Arthur J Minasy, Woodbury, NY (US);
Michael N Cooper, Hewlett, NY (US);
Christian Kinnaer, Bonlez, BE;
Assignee:
Knogo Corporation, Hauppauge, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340551 ; 340572 ; 340584 ;
Abstract
An electronic theft detection system with a transmitter antenna assembly which includes a flat electrically conductive panel positioned close to a transmitter loop antenna to preload it and isolate it from the loading effects of nearby metal objects and a receiver arranged with a signal gate synchronized to the transmitter antenna energization to prevent detection of targets located on the opposite side of the panel from the transmitter loop antenna.