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Method and system for directory assistance services

  • US 20030040304A1
  • Filed: 09/30/2002
  • Published: 02/27/2003
  • Est. Priority Date: 04/28/1994
  • Status: Active Grant
First Claim
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17. The method of clam 16 wherein the return-to-operator signal is a DTMF tone for the star key on a telephonic keypad.

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