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Method and system for telephone control using coded marks

  • US 20030169864A1
  • Filed: 11/12/2002
  • Published: 09/11/2003
  • Est. Priority Date: 12/01/1999
  • Status: Active Grant
First Claim
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8. The method according to claim 7, wherein the coded value represented by a mark is at least partially determined by the position of the mark relative to the set of predetermined nominal mark positions.

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