Zhenfeng Yang

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Flexible roll-die forming machine for variable cross-section parts
- Patent number 9,776,227
- Issue date Oct 3, 2017
- NORTH CHINA UNIVERSITY OF TECHONLOGY
- Qiang Li
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Flexible roll-die forming machine for variable cross-section parts
- Publication number 20160023256
- Publication date Jan 28, 2016
- NORTH CHINA UNIVERSITY OF TECHNOLOGY
- Qiang Li
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...