Eric Tsz Kin Yeung

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Concord, CA

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Patents Grantslast 30 patents

Information Patent Grant
Security protected credit cards container and billfold
- Patent number 9,615,641
- Issue date Apr 11, 2017
- Eric Tsz Kin Yeung
- A45 - HAND OR TRAVELLING ARTICLES

Patents Applicationslast 30 patents

Information Patent Application
Security protected credit cards container and billfold
- Publication number 20150216278
- Publication date Aug 6, 2015
- Eric Tsz Kin Yeung
- A45 - HAND OR TRAVELLING ARTICLES
Information Patent Application
Security protected credit cards container and billfold
- Publication number 20140096880
- Publication date Apr 10, 2014
- Eric Tsz Kin Yeung
- A45 - HAND OR TRAVELLING ARTICLES