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Data identifying system

  • US 4,897,531 A
  • Filed: 01/26/1988
  • Issued: 01/30/1990
  • Est. Priority Date: 01/30/1987
  • Status: Expired due to Term
First Claim
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1. An apparatus for comparing identification information recorded on a card comprising:

  • first reading means for reading out the identification information recorded on said card;

    a memory medium which is disengageably mounted in said apparatus and which has stored identification information indicative of an invalid card therein;

    second reading means for reading out the identification information from said memory medium;

    comparing means for comparing the identification information read out by said first reading means with the identification information read out by said second reading means; and

    informing means for informing, on the basis of the comparison result, whether a card whose identification information is read out by said first reading means is valid or invalid.

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