TREA

Shizuo Yokoyama

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  • Atsugi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ink jet printer
    • Patent number 4,661,822
    • Issue date Apr 28, 1987
    • Ricoh Company, Ltd.
    • Tetsuro Hirota
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Sheet feed apparatus for printer
    • Patent number 4,630,814
    • Issue date Dec 23, 1986
    • Ricoh Company, Ltd.
    • Toshio Kawakubo
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS