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:
Oct. 17, 1995
Filed:
Mar. 11, 1994
Applicant:
Inventors:
Michael D Crossfield, Cambridge, GB;
Andrew Dames, Cambridge, GB;
Assignee:
Esselte Meto International GmbH, Heppenheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340572 ; 340551 ;
Abstract
An electronic article surveillance system for detecting articles carrying or containing magnetically responsive markers is disclosed, which system comprises a transmitting antenna in the form of a large loop of current-carrying material through which the articles are passed, and one or more receiving antenna units, which detect the electromagnetic response of the markers to an interrogating electromagnetic field generated by the transmitting antenna.