1 Utility Patents
#70,637 in Tokyo
#427,309 in Japan
Forward Citations = 11
Company Filing History:

Optec D.d. Melco Laboratory Co., Ltd.
Optec Dai-ichi Denko Co., Ltd.
where one patent can have more than one assignee
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#70,637 in Tokyo
#427,309 in Japan
Company Filing History:

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