12 Utility Patents
#676 in Ibaraki
#69,890 in Japan
#328,108 in the World
Forward Citations = 97
Company Filing History:

Hitachi Engineering Co., Ltd.
where one patent can have more than one assignee
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#676 in Ibaraki
#69,890 in Japan
#328,108 in the World
Company Filing History:

Get your Inventor Badge Today