19 Utility Patents
#438 in Chiba
#39,220 in Japan
#181,319 in the World
Forward Citations = 53
Company Filing History:
Sumitomo(s.h.i.) Construction Machinery Co., Ltd.

Sumitomo Construction Machinery Co., Ltd.
4. 1 out of 2
Sumitomo (shi) Construction Machinery Manufacturing Co., Ltd.
where one patent can have more than one assignee
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