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Chung Chang
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Houston, TX, US
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last 30 patents
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Patent Grant
Rotational driveshaft coupler to facilitate a seal with static cont...
Patent number
9,309,927
Issue date
Apr 12, 2016
Chung Chang
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
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Patent Application
ROTATIONAL DRIVESHAFT COUPLER TO FACILITATE A PERFECT SEAL
Publication number
20130068049
Publication date
Mar 21, 2013
Chung Chang
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC