TREA

Masakazu Kera

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Divided exposure method and device
    • Patent number 4,323,775
    • Issue date Apr 6, 1982
    • Riso Kagaku Corporation
    • Takanori Hasegawa
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Exposure device for a thermal stencil sheet
    • Patent number 4,139,759
    • Issue date Feb 13, 1979
    • Riso Kagaku Corporation
    • Noboru Hayama
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS