TREA

Ken Yamamoto

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Patents Grantslast 30 patents

  • Information Patent Grant

    Tennis racket frame
    • Patent number 5,538,243
    • Issue date Jul 23, 1996
    • Sumitomo Rubber Industries, Ltd.
    • Ken Yamamoto
    • A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents