Patents by Inventor Gregory M. Zak

Gregory M. Zak 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).

  • Aperture member for photo plotting apparatus
    Patent number: 4761057
    Abstract: Photo plotter aperture members each have a beam forming trasnsparent ring and a central transparent cross in communication with the ring. The rings of the different members are of different diameters but of the same thickness as the lines of the respective crosses to provide uniform exposure during half diameter strokes of the aperture members.
    Type: Grant
    Filed: February 19, 1987
    Date of Patent: August 2, 1988
    Assignee: General Electric Company
    Inventors: Gregory M. Zak, Edward Cuomo