15 Utility Patents
#260 in Tsukuba
#53,344 in Japan
#248,317 in the World
Forward Citations = 3
Company Filing History:

Ishihara Sangyo Kaisha, Ltd.
where one patent can have more than one assignee
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#260 in Tsukuba
#53,344 in Japan
#248,317 in the World
Company Filing History:

Get your Inventor Badge Today