Patent
   D745602
Priority
Dec 12 2011
Filed
Jun 12 2012
Issued
Dec 15 2015
Expiry
Dec 15 2029
Assg.orig
Entity
unknown
1
31
n/a
The ornamental design for a ring binder mechanism having a convex central rib, as shown and described.

FIG. 1 is a perspective view of the ring binder mechanism having a convex central rib showing of my design;

FIG. 2 is a front elevation view of the ring binder mechanism having a convex central rib, the rear elevation view being a mirror image thereof;

FIG. 3 is a top plan view of the ring binder mechanism having a convex central rib thereof;

FIG. 4 is a bottom plan of the ring binder mechanism having a convex central rib thereof;

FIG. 5 is a right side elevation view of the ring binder mechanism having a convex central rib, the left side elevation view being a mirror image thereof; and,

FIG. 6 is a cross-section view of the ring binder mechanism having a convex central rib, taken along line 6-6 in FIG. 3.

The broken lines in the drawings illustrate portions of the ring binder mechanism having a convex central rib and form no part of the claimed design.

Qiu, Jian Yong

Patent Priority Assignee Title
D783092, Apr 23 2012 World Wide Stationery Mfg. Co., Ltd. Ring mechanism having elliptical cross sectional ring members
Patent Priority Assignee Title
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5879097, May 09 1995 WORLD WIDE STATIONERY MANUFACTURING COMPANY, LIMITED, KOON WAH MIRRORS FACTORY Ring binder
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6293722, Sep 15 1999 BANK OF AMERICA, N A , AS NEW ADMINISTRATIVE AGENT, SWING LINE LENDER AND L C ISSUER Binder Mechanism
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D591344, Dec 02 2005 Lihit Lab, Inc. Binder
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Jun 12 2012Kam Hold (Macao Commercial Offshore) Limited(assignment on the face of the patent)
Sep 27 2012YONG, QUI JIANDONGUAN NANZHA LECO STATIONERY MANUFACTURING CO , LTDASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0293150080 pdf
Sep 27 2012DONGGUAN NANZHA LECO STATIONERY MANUFACTURING CO LTDLECO STATIONERY MANUFACTURING CO LTDASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0293150276 pdf
Sep 27 2012LECO STATIONERY MANUFACTURING CO LTDKAM HOLD MACAO COMMERCIAL OFFSHORE LIMITEDASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0293150400 pdf
Sep 27 2012YONG, QUI JIANDONGGUAN NANZHA LECO STATIONERY MANUFACTURING CO LTDCORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 029315 FRAME 0080 ASSIGNOR S HEREBY COMFIRMS THE DONGUAN NANZHA LECO STATIONERY MANUFACTURING CO , LTD 0295820217 pdf
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