TREA

David T. Ritter

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  • High Point, NC, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Field telephone system
    • Patent number 5,014,347
    • Issue date May 7, 1991
    • Gulton Industries Inc., Femco Division
    • Edwin G. Cox
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Field telephone system
    • Patent number 4,847,888
    • Issue date Jul 11, 1989
    • Gulton Industries, Inc., Femco Division
    • Edwin G. Cox
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE