Patents Assigned to Kleer-Vu Plastics Corporation
  • Patent number: 5069568
    Abstract: A looseleaf binder having a protective envelope that encases the front and rear flaps and spine of the binder such that the binder can be opened to view the interior of binder while protecting the binder cover from dust and other substances. The protective envelope is wrapped around the binder prior to attaching a ring binder unit to the cover, and joined to itself along the periphery of the binder. The ring binder unit is then attached to the interior of the spine through the envelope so the front and rear flaps foldably enclose the ring binder unit. The protective envelope may be removed from the binder without damaging or blemishing the binder.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: December 3, 1991
    Assignee: Kleer-Vu Plastics Corporation
    Inventor: Fred Acker