56 Utility Patents
#1,385 in Tokyo
#6,072 in Japan
#30,663 in the World
Forward Citations = 302
Company Filing History:


Dai Nippon Printing Co., Ltd.
4. 2 out of 4,048
Alps Electric Co., Ltd.
5. 1 out of 831,952 patents
Other
where one patent can have more than one assignee
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