Patents by Inventor Daniel A. Langlois

Daniel A. Langlois 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: 4490745
    Abstract: An optical viewing device for creating an illusory image from a light source such as a cathode ray tube which includes mirrors for viewing the light source along plural paths through separate filters to separate the viewed image into independently positionable images.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: December 25, 1984
    Inventors: Erick E. Erickson, Daniel A. Langlois