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:
Nov. 09, 1993
Filed:
Jul. 02, 1992
Applicant:
Inventors:
Graeme R Mann, Engadine, AU;
Rick L Naylor, Glenmore Park, AU;
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340572 ; 340551 ; 34082531 ; 364403 ;
Abstract
A responder assembly for an article inventory control system employs a plurality of sensors for detection of sensitized markers attached to inventory items. By processing signals from each of the plurality of sensors, a detection pattern is provided to determine whether none, one, or more than one marker is present within a zone of sensitivity.