13 Utility Patents
#874 in Shizuoka
#63,411 in Japan
#296,785 in the World
Forward Citations = 45
Company Filing History:


Nhk Spring Co., Ltd.
where one patent can have more than one assignee
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#874 in Shizuoka
#63,411 in Japan
#296,785 in the World
Company Filing History:


Get your Inventor Badge Today