TREA

Juergen Freisinger

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  • Asperg, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sound transmitting air filter
    • Patent number 6,551,389
    • Issue date Apr 22, 2003
    • Filterwerk Mann & Hummel GmbH
    • Helmut Spannbauer
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

  • Information Patent Application

    Sound transmitting air filter
    • Publication number 20020124734
    • Publication date Sep 12, 2002
    • Helmut Spannbauer
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL