6 Utility Patents
#2,495 in Saitama 343-0827
#139,490 in Japan
#695,272 in the World
Forward Citations = 12
Company Filing History:
Nippon Piston Ring Co., Ltd.


where one patent can have more than one assignee
Get your Inventor Badge Today
#2,495 in Saitama 343-0827
#139,490 in Japan
#695,272 in the World
Company Filing History:


Get your Inventor Badge Today