31 Utility Patents
#12 in Seto
#18,710 in Japan
#87,612 in the World
Forward Citations = 186
Company Filing History:
Kabushiki Kaisha Opton
Opton Co., Ltd.
Other
4. 2 out of 2
Chuo Electric Manufacturing Co., Ltd.
5. 2 out of 2
Kabushikikaisha Chuodenkiseisakusho
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