Patents by Inventor George F. Kirkendall

George F. Kirkendall 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).

  • Film cassette containing pre-exposed film
    Patent number: 5187512
    Abstract: During manufacture each frame of a film strip has one portion masked while the frame is exposed to light. Said light impinges on a second portion of the frame to form a latent image. The film strip is mounted within a camera where the previously unexposed portion of the frame is exposed to a second image bearing light while the pre-exposed portion of the frame is masked from said second light, the strip of film is removed from the camera to develop the two latent images as a single photograph.
    Type: Grant
    Filed: October 21, 1990
    Date of Patent: February 16, 1993
    Assignee: Polaroid Corporation
    Inventor: George F. Kirkendall