Patents by Inventor Richard F. Lang

Richard F. Lang 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).

  • Duplex imaging system
    Patent number: 3980406
    Abstract: A duplex copying machine is provided wherein an original document, having images on both sides, is located between a transparent rotatable drum and conveyor belts and is automatically transported thereby to a first image station to expose to a photoconductor, by lamps external to the drum, the side of the document engaged by the conveyor belts. Thereafter, the document is automatically transported to a second image station to expose to the photoconductor, by lamps surrounded by the drum, the side of the document engaged by the drum.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: September 14, 1976
    Assignee: Xerox Corporation
    Inventor: Richard F. Lang