TREA

Keiko Mayuzumi

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

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    • Patent number D322572
    • Issue date Dec 24, 1991
    • Seikosha Co., Ltd.
    • Keiko Mayuzumi
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

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    • Patent number D319396
    • Issue date Aug 27, 1991
    • Seikosha Co., Ltd.
    • Keiko Mayuzumi
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Travel alarm clock
    • Patent number D319394
    • Issue date Aug 27, 1991
    • Seikosha Co., Ltd.
    • Keiko Mayuzumi
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Travel alarm clock
    • Patent number D316040
    • Issue date Apr 9, 1991
    • Seikosha Co., Ltd.
    • Keiko Mayuzumi
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

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    • Patent number D316041
    • Issue date Apr 9, 1991
    • Seikosha Co., Ltd.
    • Keiko Mayuzumi
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

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    • Patent number D314343
    • Issue date Feb 5, 1991
    • Seikosha Co., Ltd.
    • Keiko Mayuzumi
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

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    • Patent number D314152
    • Issue date Jan 29, 1991
    • Seikosha Co., Ltd.
    • Keiko Mayuzumi
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Travel alarm clock
    • Patent number D309574
    • Issue date Jul 31, 1990
    • Seikosha Co., Ltd.
    • Keiko Mayuzumi
    • D10 - Measuring, testing, or signalling instruments