5 Utility Patents
#124 in Koganei
#159,849 in Japan
#798,777 in the World
Forward Citations = 76
Company Filing History:
The Nippon Signal Co., Ltd.
Other

4. 1 out of 1
L. Engineering Co. Ltd.
5. 1 out of 1
Yamatake & Co., Ltd.
where one patent can have more than one assignee
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