Patents by Inventor Carol J. Huffman

Carol J. Huffman 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).

  • Patent number: T103204
    Abstract: An easily modified, brilliantly backlit, switch controlled panel graphically represents a process. An operator panel includes a frame holding a light-transmitting screen in front of circuit boards connected to a computer and to the controlled process. The screen displays symbols, placed on the screen with self-sticking tape, representing process steps and controls, transparent touch-sensitive switches, lights, illuminated digital displays, and the like. The switches, lights and displays connect to the circuit boards.
    Type: Grant
    Filed: February 12, 1982
    Date of Patent: July 5, 1983
    Inventors: Carter E. Dorrell, Donald E. Gutscher, Carol J. Huffman