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:
May. 05, 1992
Filed:
Nov. 29, 1990
Applicant:
Inventors:
Doug Narlow, Coral Springs, FL (US);
Hubert A Patterson, Boca Raton, FL (US);
Assignee:
Sensormatic Electronics Corporation, Deerfield Beach, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340572 ; 361321 ;
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.