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Jea H. Koo
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Chungcheongnam-do, KR
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Patents Grants
last 30 patents
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Patent Grant
Snow removing apparatus of LED traffic signal light
Patent number
10,634,338
Issue date
Apr 28, 2020
CHUNGCHEONG INFORMATION & COMMUNICATION CO. LTD.
Jea H. Koo
G08 - SIGNALLING
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last 30 patents
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Patent Application
SNOW REMOVING APPARATUS OF LED TRAFFIC SIGNAL LIGHT
Publication number
20190145616
Publication date
May 16, 2019
CHUNGCHEONG INFORMATION & COMMUNICATION CO. LTD.
Jea H. Koo
F21 - LIGHTING