Patents by Inventor L. J. DeWitt

L. J. DeWitt 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).

  • Cooler wall panel member and method of making same
    Patent number: 5418028
    Abstract: A cooler wall panel has a foam polymer core that has a thermosetting polymer skin adhered directly to the core.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: May 23, 1995
    Inventor: L. J. DeWitt