Yongjian Yuan

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Sealing strip for toner cartridge and method for making same
- Patent number 7,123,855
- Issue date Oct 17, 2006
- Yongjian Yuan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Sealing strip for toner cartridge and method for making same
- Publication number 20050054371
- Publication date Mar 10, 2005
- Yongjian Yuan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY