22 Utility Patents
#207 in Hitachinaka
#31,904 in Japan
#147,970 in the World
Forward Citations = 325
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4. 1 out of 1,646

5. 1 out of 313

where one patent can have more than one assignee
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#207 in Hitachinaka
#31,904 in Japan
#147,970 in the World
Company Filing History:





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