TREA

Gerhard Dietrich

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  • Nuremberg, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Telephone answering device-adapter
    • Patent number D258507
    • Issue date Mar 10, 1981
    • Grundig Aktiengesellschaft
    • Gerhard Dietrich
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Dictating apparatus
    • Patent number D258058
    • Issue date Jan 27, 1981
    • Grundig Aktiengesellschaft
    • Gerhard Dietrich
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Dictating apparatus
    • Patent number D258059
    • Issue date Jan 27, 1981
    • Grundig Aktiengesellschaft
    • Gerhard Dietrich
    • D14 - Recording, communication, or information retrieval equipment