Ze Yu Zhang

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NeiJiang City, CN

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Patents Grantslast 30 patents

Information Patent Grant
Ring binder mechanism
- Patent number 8,052,343
- Issue date Nov 8, 2011
- World Wide Stationery Mfg. Co., Ltd.
- Ze Yu Zhang
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Grant
Ring binder mechanism
- Patent number 8,047,737
- Issue date Nov 1, 2011
- World Wide Stationery Mfg. Co., Ltd.
- Jn Biao Pi
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Grant
Ring binder mechanism
- Patent number 7,648,302
- Issue date Jan 19, 2010
- World Wide Stationery Mfg. Co., Ltd.
- Ze Yu Zhang
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER

Patents Applicationslast 30 patents

Information Patent Application
RING BINDER MECHANISM
- Publication number 20090274508
- Publication date Nov 5, 2009
- World Wide Stationery Mfg. Co., Ltd.
- Ze Yu Zhang
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Application
Ring Binder Mechanism
- Publication number 20080175652
- Publication date Jul 24, 2008
- World Wide Stationery Mfg. Co., Ltd.
- Hung Yu Cheng
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Application
Ring Binder Mechanism
- Publication number 20080124166
- Publication date May 29, 2008
- World Wide Stationery Mfg. Co., Ltd.
- Ze Yu Zhang
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Application
Ring Binder Mechanism
- Publication number 20080075527
- Publication date Mar 27, 2008
- World Wide Stationery Mfg. Co., Ltd.
- Jn Biao Pi
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER