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Tatsumi Nakajima

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  • Inzai-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Noise reducing device
    • Patent number 7,492,911
    • Issue date Feb 17, 2009
    • Takenaka Corporation
    • Tatsumi Nakajima
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    Noise reducing device
    • Publication number 20050157890
    • Publication date Jul 21, 2005
    • Takenaka Corporation
    • Tatsumi Nakajima
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS