2 Utility Patents
#669 in Chigasaki
#304,758 in Japan
Forward Citations = 117
Company Filing History:
Sanwa Denki Kogyo Co., Ltd.
Honda Tsushin Kogyo Co., Ltd.

4. 1 out of 5,289

5. 1 out of 7
Nippon Telegraph
where one patent can have more than one assignee
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