TREA

Stephen Soto

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  • Madison, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Computer data entry method and apparatus
    • Patent number 4,737,980
    • Issue date Apr 12, 1988
    • Amtelco
    • William J. Curtin
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Compact keyboard system
    • Patent number 4,727,357
    • Issue date Feb 23, 1988
    • Amtel Communications, Inc.
    • William J. Curtin
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Telephone answering system with line detector
    • Patent number 4,701,950
    • Issue date Oct 20, 1987
    • Amtel Communications, Inc.
    • William J. Curtin
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone line concentrator without switching matrix
    • Patent number 4,674,116
    • Issue date Jun 16, 1987
    • Amtelco
    • William J. Curtin
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Call screening system
    • Patent number 4,634,811
    • Issue date Jan 6, 1987
    • Amtel Communications, Inc.
    • William J. Curtin
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Series connected interceptor
    • Patent number 4,629,831
    • Issue date Dec 16, 1986
    • Amtel Communications, Inc.
    • William J. Curtin
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE