Takeshi Hattori

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Hamamatsu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Portable keyboard-type musical instrument
- Patent number 4,550,638
- Issue date Nov 5, 1985
- Kabushiki Kaisha Kawai Gakki Seisakusho
- Kenkichi Kaneko
- G10 - MUSICAL INSTRUMENTS ACOUSTICS