Masato Watanabe

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Tokorozawa-shi, Saitama 359, JP

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Patents Grantslast 30 patents

Information Patent Grant
Board game and playing process
- Patent number 5,839,729
- Issue date Nov 24, 1998
- Masato Watanabe
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Board game system and process
- Patent number 5,833,238
- Issue date Nov 10, 1998
- Masato Watanabe
- A63 - SPORTS GAMES AMUSEMENTS