Yonggang Dong

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Hebei, CN

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Patents Applicationslast 30 patents

Information Patent Application
Device for Forming Bimetal Composite Pipe by Spinning Semisolid Met...
- Publication number 20220062991
- Publication date Mar 3, 2022
- Yanshan University
- Jianfeng Song
- B22 - CASTING POWDER METALLURGY
Information Patent Application
APPARATUS FOR REPAIRING WHEEL TREAD WITH MATERIAL INCREASE
- Publication number 20210023660
- Publication date Jan 28, 2021
- Yanshan University
- Yonggang Dong
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR