Patents Represented by Attorney, Agent or Law Firm L. C. Hall
  • Easy open envelope
    Patent number: 6223977
    Abstract: The envelope of the present invention is prepared from a single blank of material to include easy opening means and security features for tamper evident delivery of credit cards, debit cards and other sensitive material. The envelope structure includes a bangtail flap foldably attached to the rear panel of the envelope and folded inside the envelope, a pair of perforated lines located on each side of the rear panel for providing access to the inside bangtail flap, and a separate opening means for the closure flap.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: May 1, 2001
    Assignee: Westvaco Corporation
    Inventor: Maurice Hill