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Mei-Lan Chen
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Yongkang City, TW
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Patents Grants
last 30 patents
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Patent Grant
Ultraviolet ray sterilization device
Patent number
7,638,778
Issue date
Dec 29, 2009
Mei-Lan Chen
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Patents Applications
last 30 patents
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Patent Application
Light-emitting warning device of a water quality monitoring device
Publication number
20100085731
Publication date
Apr 8, 2010
Mei-Lan Chen
F21 - LIGHTING
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Patent Application
Ultraviolet ray sterilization device
Publication number
20090230321
Publication date
Sep 17, 2009
Mei-Lan Chen
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE