Patents Assigned to World Wide Stationary Manufacturing Company, Limited
  • Ring binder
    Patent number: 5755513
    Abstract: A ring binder is disclosed as being adapted to be secured to a cover by at least one rivet, the ring binder comprising a substantially rigid curved upper plate supporting a pair of pivotable elongate plates to which a plurality of ring members are mounted, and the rivet is engageable directly with the cover and the curved upper plate, and the rivet includes a cylindrical body with an inwardly bent upper end.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: May 26, 1998
    Assignee: World Wide Stationary Manufacturing Company Limited
    Inventor: Chun Yuen To
  • Ring for a ring binder mechanism
    Patent number: D533588
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: December 12, 2006
    Assignee: World Wide Stationary Manufacturing Company, Limited
    Inventor: Ho P. Cheng