18 Utility Patents
#327 in Hitachi
#41,658 in Japan
#192,686 in the World
Forward Citations = 541
Company Filing History:

Hitachi Engineering Co., Ltd.

where one patent can have more than one assignee
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#327 in Hitachi
#41,658 in Japan
#192,686 in the World
Company Filing History:


Get your Inventor Badge Today