TREA

Takao Kishida

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  • Hachioji, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Telephone systems
    • Patent number 4,600,809
    • Issue date Jul 15, 1986
    • Kabushiki Kaisha Toshiba
    • Kaoru Tatsumi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE