TREA

Kazumi Yamakawa

Follow

Person

  • Soka, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Self-propelling rolling toy
    • Patent number 5,947,793
    • Issue date Sep 7, 1999
    • Dah Yang Toy Industrial Co., Ltd.
    • Kazumi Yamakawa
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Self-propelling rolling toy
    • Patent number 5,924,909
    • Issue date Jul 20, 1999
    • Dah Yang Toy Industrial Co., Ltd.
    • Kazumi Yamakawa
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Toy with changing facial expression
    • Patent number 5,902,169
    • Issue date May 11, 1999
    • Dah Yang Toy Industrial Co., Ltd.
    • Kazumi Yamakawa
    • A63 - SPORTS GAMES AMUSEMENTS