12 Utility Patents
#661 in Ibaraki
#68,228 in Japan
#314,808 in the World
Forward Citations = 110
Company Filing History:

Hitachi, Ltd.
Other
where one patent can have more than one assignee
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#661 in Ibaraki
#68,228 in Japan
#314,808 in the World
Company Filing History:

Get your Inventor Badge Today