Messrs. Kabushiki Kaisha Mitachi Onkyo Seisakusho

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  • Information Patent Grant

    Dynamic type pickup

    • Patent number 4,011,417
    • Issue date Mar 8, 1977
    • Messrs. Kabushiki Kaisha Mitachi Onkyo Seisakusho
    • Tomo Kageyama
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

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