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Automated shopping basket system with accounting using marks written on articles

  • US 5,739,513 A
  • Filed: 01/28/1997
  • Issued: 04/14/1998
  • Est. Priority Date: 03/10/1994
  • Status: Expired due to Fees
First Claim
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1. A system for operating shopping baskets with an accounting function, wherein a "valid" mark is written onto a portion of each article, and the "valid" mark is changed to an "invalid" mark when a status code thereof is not read correctly.

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