Chi Wook Youn

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Seoul, KR

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Patents Grantslast 30 patents

Information Patent Grant
Sealing structure of pump
- Patent number 7,137,790
- Issue date Nov 21, 2006
- Keumjung Industrial Co., Ltd.
- Chi Wook Youn
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
Sealing structure of pump
- Publication number 20040197207
- Publication date Oct 7, 2004
- Chi Wook Youn
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...