Patents by Inventor John Nicholas Wilkinson

John Nicholas Wilkinson 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).

  • Lamphouse and module for photographic slide projectors
    Patent number: 4053759
    Abstract: A high intensity lamphouse and cooling means for use with photographic slide projectors. The module has a protective glass face, and air inlet and a second air outlet on opposite diametrical points between the lamp and the glass face. Also included are an additional opening near the base of the lamp providing a second air path through the module along the rear side of a reflector and the length of the lamp.
    Type: Grant
    Filed: November 4, 1975
    Date of Patent: October 11, 1977
    Assignee: Optical Radiation Corporation
    Inventor: John Nicholas Wilkinson