Chung Nin Ko

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Kowloon, CN

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Patents Applicationslast 30 patents

Information Patent Application
Ring binder mechanism with pronged metal anchors
- Publication number 20050135871
- Publication date Jun 23, 2005
- Hong Kong Stationery Manufacturing Co., Ltd.
- Chung Nin Ko
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER