Patents by Inventor John T. Norris

John T. Norris 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: 4222655
    Abstract: A darkroom assembly comprised of a shell consisting of six interconnected rectangular panels formed into a box encloses suitably arranged apparatus and chemicals for making contact and enlarged photographic prints, and further incorporates the features of a pin hole camera. By virtue of the combination of an internally housed safe light and a viewing lens in the upper panel mounted above a red filter window, the operator can observe phenomena within the darkroom. Manipulations within the darkroom are achieved by insertion of the operator's hands through light-tight openings in the opposed side panels of the darkroom. For purposes of storage or shipping, the relative positions of the six panels may be adjusted so as to produce a collapsed structure occupying less space than the erected darkroom.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: September 16, 1980
    Inventor: John T. Norris