Patents by Inventor Charles W. Mortell

Charles W. Mortell 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).

  • Data input device using combined numeric inputs to encode characters
    Patent number: 5924803
    Abstract: The invention is a system for encoding inputs and methods of operation thereof.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: July 20, 1999
    Assignee: American Tel-A-System , Inc.
    Inventors: William J. Curtin, IV, William J. Curtin, II, Charles W. Mortell