Hsia-Yuen Chen

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Taichung, TW

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Patents Applicationslast 30 patents

Information Patent Application
SCRIBBLING SUBSTRATE
- Publication number 20090263623
- Publication date Oct 22, 2009
- BEIJING ZBSD PATENT & TRADEMARK AGENT LTD.
- Hsia-Yuen Chen
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES