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Iwan Hänggi

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  • Nunningen, CH
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sound amplifier
    • Patent number D881156
    • Issue date Apr 14, 2020
    • Sennheiser electronic GmbH & Co. KG
    • Oliver Berger
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Headphones
    • Patent number D868029
    • Issue date Nov 26, 2019
    • Sennheiser electronic GmbH & Co. KG
    • Iwan Hänggi
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Headphones
    • Patent number D849713
    • Issue date May 28, 2019
    • Sennheiser electronic GmbH & Co. KG
    • Iwan Hänggi
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Headset
    • Patent number D732001
    • Issue date Jun 16, 2015
    • SENNHEISER COMMUNICATIONS A/S
    • Dirk Licht
    • D14 - Recording, communication, or information retrieval equipment