Patents by Inventor William P. Lightfoot

William P. Lightfoot 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).

  • Air conditioner cord warning label
    Patent number: D393487
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: April 14, 1998
    Inventors: Robert J. Cunitz, Shelley Waters Deppa, William P. Lightfoot, Paulette E. Chapman, Victor E. Long