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