Patents by Inventor Keith L. Knowlston

Keith L. Knowlston 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).

  • Fingerprint acquisition system
    Patent number: 4932776
    Abstract: A characteristic pattern acquisition system featuring a block formed of a bundle of optical fibers and having one end face for projecting an image of a characteristic pattern placed on an opposite detecting end face of the block and a light source for projecting light onto the detecting end face to illuminate the characteristic pattern.
    Type: Grant
    Filed: November 5, 1987
    Date of Patent: June 12, 1990
    Assignee: Fingerprint Technology, Inc.
    Inventors: Robert F. Dowling, Jr., Keith L. Knowlston