Inventor

KUWABARA HIRONORI

JP3 patents

Patents

3 patents

US7142686B2Nov 28, 2006

Compound sound generator

CITIZEN ELECTRONICS20 citations89

US7162050B2Jan 9, 2007

Compound sound generator

CITIZEN ELECTRONICS13 citations81

US7158650B2Jan 2, 2007

Electroacoustic transducer

CITIZEN ELECTRONICS10 citations81