Patents by Inventor Robert F. Cranford

Robert F. Cranford 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).

  • Keystroke aligning system and margin indicator for typewriters and computer printers
    Patent number: 4867592
    Abstract: An optical method for alignment of paper when making corrections and additions to previously typed or printed sheets is described. A light spot is projected which indicates the exact point of type impact on the sheet. The paper can then be moved until the spot falls onto the desired area. The system can also be used for margin and end-of-page signalling.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: September 19, 1989
    Assignee: Aline-A-Lite, Inc.
    Inventor: Robert F. Cranford