TREA

Yoshinori Hariguchi

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  • Shizuoka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vibration absorber for a racket
    • Patent number 4,811,947
    • Issue date Mar 14, 1989
    • Yamaha Corporation
    • Masanori Takatsuka
    • A63 - SPORTS GAMES AMUSEMENTS