13 Utility Patents
#12,201 in Tokyo
#63,450 in Japan
#297,024 in the World
Forward Citations = 121
Company Filing History:

Sumida Electric Co., Ltd.
where one patent can have more than one assignee
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#12,201 in Tokyo
#63,450 in Japan
#297,024 in the World
Company Filing History:

Get your Inventor Badge Today