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Kolen obtains US patent on lens optical system
[DISCLOSURE] Kolen (078650) has obtained a US patent on photographic lens optical system, it announced on July 1.
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Kolen obtains US patent on lens optical system
July 1, 2016 - 14:55
By 황유미
[DISCLOSURE]
Kolen
(078650) has obtained a US patent on photographic lens optical system, it announced on July 1.
황유미
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