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Dalong Cheng
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Taoyuan City, TW
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Patents Grants
last 30 patents
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Patent Grant
LED lighting apparatus with transparent flexible circuit structure
Patent number
7,604,377
Issue date
Oct 20, 2009
Polytron Technologies, Inc.
Sam Yu
F21 - LIGHTING
Patents Applications
last 30 patents
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Patent Application
TRANSPARENT DISPLAY STRUCTURE
Publication number
20130051000
Publication date
Feb 28, 2013
Sam YU
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Patent Application
Plane structure of light-emitting diode lighting apparatus
Publication number
20080080181
Publication date
Apr 3, 2008
Polytron Technologies, Inc.
Sam Yu
F21 - LIGHTING