Patents by Inventor Davin J. Lee

Davin J. Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for testing telephone sound quality
    Patent number: 7720202
    Abstract: A method and apparatus for testing telephone sets to determine their sound quality comprising a system for repeatedly applying a sequence of pulse tones to a test telephone where the respective tone frequencies are different and within the normal human voice range.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: May 18, 2010
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: John R Bachorik, Joseph T. Hazeltine, Davin J. Lee
  • Method and apparatus for testing telephone sound quality
    Patent number: 7236573
    Abstract: A method and apparatus for testing telephone sets to determine their sound quality comprising a system for repeatedly applying a sequence of pulse tones to a test telephone where the respective tone frequencies are different and within the normal human voice range.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: June 26, 2007
    Assignee: AT&T Intellectual Property, Inc.
    Inventors: John R. Bachorik, Joseph T. Hazeltine, Davin J. Lee
  • Method and apparatus for testing telephone sound quality
    Publication number: 20030185351
    Abstract: A method and apparatus for testing telephone sets to determine their sound quality comprising a system for repeatedly applying a sequence of pulse tones to a test telephone where the respective tone frequencies are different and within the normal human voice range.
    Type: Application
    Filed: March 31, 2003
    Publication date: October 2, 2003
    Inventors: John R. Bachorik, Joseph T. Hazeltine, Davin J. Lee