Patents Assigned to Visual Sales Corporation
  • Slide viewing apparatus
    Patent number: 4218118
    Abstract: A slide viewing apparatus having an enclosure with a projection screen and a projection system including a light source and lens for sequentially projecting images from a plurality of transparencies onto a mirror which reflects the images onto the screen.
    Type: Grant
    Filed: May 2, 1978
    Date of Patent: August 19, 1980
    Assignee: Visual Sales Corporation
    Inventor: James E. Orr