21 Utility Patents
#217 in Hitachinaka
#33,184 in Japan
#151,367 in the World
Forward Citations = 316
Company Filing History:

Hitachi Engineering &service Co., Ltd.
where one patent can have more than one assignee
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#217 in Hitachinaka
#33,184 in Japan
#151,367 in the World
Company Filing History:

Get your Inventor Badge Today