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BEIJING, CN
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last 30 patents
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Patent Grant
Coupling apparatus for coiled tubings of different diameters, insta...
Patent number
11,149,496
Issue date
Oct 19, 2021
China National Petroleum Corporation
Dexin Pang
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
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Patent Application
COUPLING APPARATUS FOR COILED TUBINGS OF DIFFERENT DIAMETERS, INSTA...
Publication number
20180209572
Publication date
Jul 26, 2018
CHINA NATIONAL PETROLEUM CORPORATION
DEXIN PANG
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...