Patents by Inventor Albert C. Steward

Albert C. Steward 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).

  • Portable screen
    Patent number: D322520
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: December 24, 1991
    Inventors: Stephen A. Steward, Albert C. Steward