TREA

Hisayoshi Nakatsuka

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  • Mitaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Lateral pressure detector for use with a phonograph record player
    • Patent number 4,183,537
    • Issue date Jan 15, 1980
    • Namiki Precision Jewel Co., Ltd.
    • Hisayoshi Nakatsuka
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Tone arm
    • Patent number 4,162,076
    • Issue date Jul 24, 1979
    • Namiki Precision Jewel Co., Ltd.
    • Hisayoshi Nakatsuka
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Non-vibration tone arm
    • Patent number 4,147,364
    • Issue date Apr 3, 1979
    • Namiki Precision Jewel Co., Ltd.
    • Hisayoshi Nakatsuka
    • G11 - INFORMATION STORAGE