TREA

Masao Sunagawa

Follow

Person

  • Hitachi, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Electric vacuum cleaner
    • Patent number D312901
    • Issue date Dec 11, 1990
    • Hitachi, Ltd.
    • Tomoyuki Miyata
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Vacuum cleaner
    • Patent number D293728
    • Issue date Jan 12, 1988
    • Hitachi, Ltd.
    • Yoshikuni Ohhira
    • D32 - Washing, cleaning, or drying machine