Patents by Inventor Keith C. Elderfield

Keith C. Elderfield 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).

  • Multiple paper holder and method for a computer printer
    Patent number: 4717273
    Abstract: A multiple paper holding apparatus having a mounting plate positioned adjacent a rear infeed end of a computer printer. The free ends from several paper sources are mounted in related slots and over the top edge of the mounting plate, and releasable pin means engaging edge apertures of the paper releasably hold the paper in place. Thus a selected one of the paper sources can be conveniently fed into the printer.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: January 5, 1988
    Inventor: Keith C. Elderfield