27 Utility Patents
#93 in Numazu
#23,319 in Japan
#108,515 in the World
Forward Citations = 504
Company Filing History:

Kabushiki Kaisha Ricoh
Mitsubishi Pencil Kabushiki Kaisha
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#93 in Numazu
#23,319 in Japan
#108,515 in the World
Company Filing History:

Get your Inventor Badge Today