Patents by Inventor John L. Hilburn

John L. Hilburn 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).

  • Methods and apparatus for using multiple keyboards connected in a daisy chain to a keyboard port of a computer
    Patent number: 5576706
    Abstract: Multiple keyboards (chord or standard format) are connected in a daisy chain fashion to a computer using only the keyboard port of the computer. The keyboard system has an input connector and an output connecter, wherein a child keyboard system that includes a plurality of keys corresponding to characters is connected to the input connector and one of a computer and a parent keyboard system that includes a plurality of keys corresponding to characters is connected to the output connector.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: November 19, 1996
    Assignee: Infogrip, Inc.
    Inventors: Darrin P. Daigle, John L. Hilburn