TREA

Konrad Hass

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  • Wedemark, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Headphone
    • Patent number 7,162,051
    • Issue date Jan 9, 2007
    • Sennheiser electronic GmbH & Co. KG
    • Axel Grell
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Microphone
    • Publication number 20040258268
    • Publication date Dec 23, 2004
    • Heinz Epping
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Headphone
    • Publication number 20040156521
    • Publication date Aug 12, 2004
    • Axel Grell
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE