Masayuki Kanazawa

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Ishioka, JP

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Patents Grantslast 30 patents

Information Patent Grant
A buzzer having adjustable buzzer sound
- Patent number 4,115,770
- Issue date Sep 19, 1978
- Kabushiki Kaisha Seikosha
- Masayuki Kanazawa
- G10 - MUSICAL INSTRUMENTS ACOUSTICS