Shengmin Wen

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Apex, NC, US

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Patents Applicationslast 30 patents

Information Patent Application
Magnetically erasable writable educational flash card and method fo...
- Publication number 20110097699
- Publication date Apr 28, 2011
- Shengmin Wen
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Electrically erasable writable educational flash card
- Publication number 20110065081
- Publication date Mar 17, 2011
- Shengmin Wen
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS