ELECTRONIC ARTICLE SURVEILLANCE SYSTEM WITH IMPROVED DIFFERENTIATION - Patent 0403632

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EP 0 403 632 A1

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(43)	Date of publication:
	27.12.1990 Bulletin 1990/52

(21)	Application number: 90901502.0

(22)	Date of filing: 27.12.1989

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International Patent Classification (IPC):

G01V 3/ 12^{( . )}
G01V 15/ 00^{( . )}

G01V 3/ 00^{( . )}
G08B 13/ 24^{( . )}

(86)	International application number:
	PCT/US1989/005874

(87)	International publication number:
	WO 1990/007760 (12.07.1990 Gazette 1990/16)

(84)	Designated Contracting States:
	AT BE CH DE ES FR GB IT LI LU NL SE

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Priority:

09.01.1989 US 19890295064

(71)	Applicant: CHECKPOINT SYSTEMS, INC.
	Thorofare, NJ 08086 (US)

(72)	Inventors:
	LIZZI, Phillip, J. Deptford, NJ 08096 (US) SHANDELMAN, Richard, A. Levittown, PA 19056 (US)

(74)	Representative: Menges, Rolf, Dipl.-Ing.
	Ackmann & Menges Patentanwälte Postfach 14 04 31 D-80454 München D-80454 München (DE)

(54)	ELECTRONIC ARTICLE SURVEILLANCE SYSTEM WITH IMPROVED DIFFERENTIATION