Patents by Inventor Clifton S. Swafford

Clifton S. Swafford has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Hosiery envelope
    Patent number: 3970242
    Abstract: Disclosed herein is a stocking envelope having an improved sealing arrangement provided by a pair of stripes of "bimodal adhesive" laid down wet during initial envelope formation to join the glue flaps of the envelope to associated major envelope panels. Subsequently, portions of the dried stripes of "bimodal adhesive" are reactivated by heat during envelope closing to seal an overlying closing flap to a major panel through special apertures formed in the glue flaps.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: July 20, 1976
    Assignee: Rexham Corporation
    Inventors: Clifton S. Swafford, Thurman T. Caldwell, William J. Dungan