Patents by Inventor Marshall J. Yaeger

Marshall J. Yaeger 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).

  • Projecting kaleidoscope
    Patent number: 4077706
    Abstract: A projecting kaleidoscope comprises two V-shaped mirror troughs arranged downstream of a transparent or translucent design through which light is projected. The projected light travels by means of lenses along an optical path through the design and thence through the two V-shaped mirror troughs.
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: March 7, 1978
    Inventor: Marshall J. Yaeger