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Beijing City, CN
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Patents Grants
last 30 patents
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Patent Grant
Method for manufacturing S-shaped bent edge on heat-isolating prote...
Patent number
8,464,570
Issue date
Jun 18, 2013
Xuejun Cui
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Patents Applications
last 30 patents
Information
Patent Application
Method for Producing Surrounding Connection of Heat-insulating Prot...
Publication number
20150068021
Publication date
Mar 12, 2015
Xuejun Cui
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Method for forming hemmed edges at a punch hole of a metal protecti...
Publication number
20100313721
Publication date
Dec 16, 2010
Xuejun CUI
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Method for manufacturing S-shaped bent edge on heat-isolating prote...
Publication number
20100139358
Publication date
Jun 10, 2010
Cui Xuejun
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...