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Min-jin Cho
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Suwon, KR
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last 30 patents
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Patent Grant
Lens for LED outdoor lamp, and its applied road lamp, security lamp...
Patent number
8,007,127
Issue date
Aug 30, 2011
Yuyang D&U Co., Ltd.
Sang-ok Kim
F21 - LIGHTING
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last 30 patents
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Patent Application
LIGHT EMITTING DIODE FLOODLIGHT
Publication number
20120155077
Publication date
Jun 21, 2012
YUYANG DNU CO., LTD.
Sang Ok KIM
F21 - LIGHTING
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Patent Application
Lens for LED outdoor lamp, and its applied road lamp, security lamp...
Publication number
20100073928
Publication date
Mar 25, 2010
YUYANG D&U Co.
Sang-ok Kim
G02 - OPTICS