Sang-Wook Ha

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Cheonnam, KR

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for suppressing surface oxide film during hot fin...
- Patent number 6,134,933
- Issue date Oct 24, 2000
- Mitsubishi Heavy Industries, Ltd.
- Mikio Yamamoto
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...