Won Su Seo

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Gwang Myeong, KR

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Patents Grantslast 30 patents

Information Patent Grant
Welding mask
- Patent number 8,381,312
- Issue date Feb 26, 2013
- Won Su Seo
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Shading device for welding helmet
- Patent number 8,035,761
- Issue date Oct 11, 2011
- Won Su Seo
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
WELDING MASK
- Publication number 20100287676
- Publication date Nov 18, 2010
- Won Su Seo
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Shading Device For Welding Helmet
- Publication number 20080092259
- Publication date Apr 24, 2008
- Won Su Seo
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR