Patents Assigned to World Wide Stationary Company Limited
  • Ring binder
    Patent number: 5772348
    Abstract: A ring binder (100, 200, 300) adapted to be secured to a cover (112, 212, 312) is disclosed as comprising a substantially rigid upper plate member (102, 202, 302) supporting two pivotable lower plates (104a, 104b, 204a, 204b, 304a, 304b) to which a plurality of rings (106, 206, 306) are mounted, and at least a set of claws (108, 208, 308) integrally formed with the ring binder (100, 200, 300) and adapted to secure the ring binder (100, 200, 300) to the cover (112, 212, 312).
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: June 30, 1998
    Assignee: World Wide Stationary Company Limited
    Inventor: Simon Chun Yuen To