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:
Apr. 07, 1992
Filed:
Jun. 27, 1989
Applicant:
Inventors:
Simon Barakai, Andresy, FR;
Christian Guion, Verrieres Le Buisson, FR;
Assignee:
Schlumberger Industries, Montrouge, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
235380 ; 235379 ; 364408 ;
Abstract
The invention relates to making use of a 'black' list in a system where goods or services are provided in response to a memory card being presented. The complete 'black' list is stored in the memory (46) of a computer center (40). The identification numbers of the cards are subdivided into a plurality of classes. The memory (28) of each local terminal (10) stores the ranks of classes having at least one identification number on the 'black' list.