Gwang Seok Choi

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Seoul, KR

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Patents Grantslast 30 patents

Information Patent Grant
Pipe coupling
- Patent number 7,540,540
- Issue date Jun 2, 2009
- Younwoo Engineering Co., Ltd.
- Jong Ho Kwon
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Pipe coupling
- Publication number 20080169648
- Publication date Jul 17, 2008
- Younwoo Engineering Co., Ltd
- Jong Ho Kwon
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...