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Demand publishing royalty accounting system

  • US 4,179,212 A
  • Filed: 09/06/1977
  • Issued: 12/18/1979
  • Est. Priority Date: 09/06/1977
  • Status: Expired due to Term
First Claim
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1. An information coded paper document comprising:

  • (a) a paper base sheet;

    (b) a plurality of invisible, electrically conductive, substantially parallel bands on said base sheet and having information coded thereon in units of specific electrical conductivity modified in accordance with an intelligence code;

    (c) visual indicia on said base sheet and(d) wherein said document may be reproduced by a compatible document copier which senses the coded information thereon.

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