Electrical transmission or interconnection system

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  • Information Patent Application

    SIGNAL SWITCHING DEVICE

    • Publication number 20070230450
    • Publication date Oct 4, 2007
    • NTT DoCoMo, Inc.
    • Kunihiro Kawai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Signal switching device

    • Publication number 20040097379
    • Publication date May 20, 2004
    • NTT DoCoMo, Inc.
    • Kunihiro Kawai
    • H01 - BASIC ELECTRIC ELEMENTS