Takashi Aoyagi

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Shizuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Keyboard musical instrument equipped with hammer shank stopper wher...
- Patent number 5,616,880
- Issue date Apr 1, 1997
- Yamaha Corporation
- Hajime Hayashida
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Keyboard musical instrument having jacks changeable in escape speed...
- Patent number 5,583,306
- Issue date Dec 10, 1996
- Yamaha Corporation
- Hajime Hayashida
- G10 - MUSICAL INSTRUMENTS ACOUSTICS