Wing Yiu Ng

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Sai Wan Ho, HK

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Patents Applicationslast 30 patents

Information Patent Application
RING BINDER MECHANISM HAVING PLASTIC HOUSING
- Publication number 20080085145
- Publication date Apr 10, 2008
- WORLD WIDE STATIONERY MANUFACTURING COMPANY LIMITED
- Chun Yuen To
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER