Mototaka Harakawa

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Shizuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Buzzer with rigid electrical leads
- Patent number 4,175,262
- Issue date Nov 20, 1979
- Star Seimitsu Kabushiki Kaisha
- Mototaka Harakawa
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Buzzer with electronic integrated oscillation circuit
- Patent number 4,163,223
- Issue date Jul 31, 1979
- Star Seimitsu Kabushiki Kaisha
- Yukio Sato
- G08 - SIGNALLING