TREA

Frank B. Manning

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  • Boston, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Telephone switch-connector assembly
    • Patent number D271762
    • Issue date Dec 13, 1983
    • Zoom Telephonics, Inc.
    • Frank B. Manning
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Telephone switch-connector unit
    • Patent number D271301
    • Issue date Nov 8, 1983
    • Zoom Telephonics, Inc.
    • Frank B. Manning
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Telephone switch-connector device
    • Patent number D271302
    • Issue date Nov 8, 1983
    • Zoom Telephonics, Inc.
    • Frank B. Manning
    • D14 - Recording, communication, or information retrieval equipment