Patents by Inventor Antoine Ledan

Antoine Ledan 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).

  • Patent number: 4049339
    Abstract: Eyeglasses used to provide depth simulation when worn to view a planar picture on a movie screen. The temples and frame of the eyeglasses are made from substantially rectangular opaque plastic and transparent, triangular shaped lenses are positioned in the frame adjacent a nosepiece cut therein. The lens and frame arrangement allow each eye to view the screen except for the corresponding edge thereof so that when the total picture is seen through both eyes the sensation of depth perception is realized.
    Type: Grant
    Filed: February 20, 1976
    Date of Patent: September 20, 1977
    Inventor: Antoine Ledan