30 Utility Patents
#45 in Mito
#19,778 in Japan
#92,354 in the World
Forward Citations = 634
Company Filing History:

Hitachi Const. Mach. Company
where one patent can have more than one assignee
Get your Inventor Badge Today
#45 in Mito
#19,778 in Japan
#92,354 in the World
Company Filing History:

Get your Inventor Badge Today