Yuanhong WANG

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Qingdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
Side knock type mechanical pencil
- Patent number 8,480,322
- Issue date Jul 9, 2013
- Yuanhong Wang
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
SIDE KNOCK TYPE MECHANICAL PENCIL
- Publication number 20110229245
- Publication date Sep 22, 2011
- Yuanhong WANG
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES