Patents by Inventor Robert W. Perdue

Robert W. Perdue 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).

  • Wheelchair lock device
    Patent number: 4809818
    Abstract: A wheelchair locking device which attaches to both wheelchair hand brakes, thereby activating both brakes when one brake is activated, and which folds when used with a folding wheelchair.
    Type: Grant
    Filed: July 14, 1987
    Date of Patent: March 7, 1989
    Assignee: Leggett, Perdue & MacCarthy, Sr.
    Inventors: Geary M. Leggett, Robert W. Perdue