5 Utility Patents
#8,328 in Osaka
#162,524 in Japan
#826,892 in the World
Forward Citations = 32
Company Filing History:
Tsumura Research Institute Co.
Hitachi Kiden Kogyo Kabushiki Kaisha
Yagiantena Kabushiki Kaisha
4. 1 out of 1
Toshihiro Tsumura
where one patent can have more than one assignee
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