Patents by Inventor Ralph Rand

Ralph Rand 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).

  • Optical scanner
    Patent number: 3992623
    Abstract: A folded retro-reflective optical scanner using common major optics for both scanning and reading and achieving a long scan line (8.25 inches) with a short throw distance and little bow. Astigmatic effects in the reading beam are minimized by utilizing only the center portion of the return beam for reading.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: November 16, 1976
    Assignee: Graphic Sciences, Inc.
    Inventors: Richard W. Rhyins, Ralph Rand, Matthew J. Costello, Robert E. Krallinger