Kabushiki Kaisha Kawaigakki

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Hamamatsu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Key assignor
- Patent number 4,138,916
- Issue date Feb 13, 1979
- Kabushiki Kaisha Kawaigakki
- Hiroshi Kitagawa
- G10 - MUSICAL INSTRUMENTS ACOUSTICS