Patents by Inventor Thomas L. Helms

Thomas L. Helms 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).

  • Patent number: D315813
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: March 26, 1991
    Inventors: William R. Nelson, Thomas L. Helms