TREA

Kazumi Hirakawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric discharge recording materials
    • Patent number 4,439,485
    • Issue date Mar 27, 1984
    • Honshu Seishi Kabushiki Kaisha
    • Shuji Takemura
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Discharge recording medium
    • Patent number 4,400,706
    • Issue date Aug 23, 1983
    • Honshu Seishi Kabushiki Kaisha
    • Shuji Takemura
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS