Patents by Inventor DeWitt Gifford Wilcox

DeWitt Gifford Wilcox 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).

  • Method for making flexible duct
    Patent number: 4104097
    Abstract: The present invention relates to an apparatus and method for making a flexible duct of wire-reinforced construction made from a plurality of adhesive-coated polymeric tapes. The tapes are simultaneously applied from angularly oppositely disposed directions in conjunction with application of a reinforcement wire to provide a helix construction with overlapping convoluted edges to provide a duct of predetermined length.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: August 1, 1978
    Assignee: Clecon Incorporated
    Inventors: Raymond A. Gregory, DeWitt Gifford Wilcox