Patents by Inventor Frederick A. Major

Frederick A. Major 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).

  • Camera lens cover and sunshade apparatus
    Patent number: 4415242
    Abstract: A combination lens cover and sunshade for a camera includes a plurality of pivotable pedals which move from a closed position, comprising a lens cover, to an open position, comprising a sunshade for the camera lens and the pivoting is accomplished by cam action.
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: November 15, 1983
    Inventor: Frederick A. Major
  • Rechargeable transparent slide viewer apparatus
    Patent number: 4372068
    Abstract: Apparatus for viewing a transparency includes a rechargeable battery and a telescoping lens housing which moves inwardly and outwardly with respect to a housing in which is disposed the rechargeable battery, a light source, and a solid diffuser/reflector block for diffusing and reflecting light from the light source over substantially the entire area of the transparency.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: February 8, 1983
    Assignee: Frederick A. Major
    Inventors: Paul A. Knapp, Frederick A. Major