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N.P.L. Ltd.

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Loudspeaker-and-pre-stressed cabinet
    • Patent number 6,628,797
    • Issue date Sep 30, 2003
    • N.P.L. Ltd.
    • Teppei Yamada
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker structure
    • Patent number 5,194,701
    • Issue date Mar 16, 1993
    • N.P.L. Ltd.
    • Teppi Yamada-Scriba
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

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