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. 14, 1994
Filed:
Jan. 25, 1993
Applicant:
Inventors:
Markus B Kopp, Pompano Beach, FL (US);
Richard L Copeland, Boca Raton, FL (US);
Assignee:
Sensormatic Electronics Corporation, Deerfield Beach, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ; G08B / ;
U.S. Cl.
CPC ...
343742 ; 340572 ; 343867 ;
Abstract
An antenna arrangement in which a first antenna means is arranged to define a null contour adjacent the first antenna means and at which the magnetic flux from the first antenna means is substantially a null and in which a second antenna means is arranged to substantially follow the null contour.