Hyun Jun Choi

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Asan, KR

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Patents Applicationslast 30 patents

Information Patent Application
STEAM-BLOCKING APPARATUS
- Publication number 20140047886
- Publication date Feb 20, 2014
- HYUNDAI STEEL COMPANY
- Yong Kook Park
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...