Patents by Inventor Norman D. Martin

Norman D. Martin 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).

  • Window assembly
    Patent number: 5065544
    Abstract: A window assembly including two horizontally slidable window units normally occupying separate portions of a window opening, which window units are selectively movable across the opening to provide a ventilation to an interior space. Each window unit comprises a four-sided rectangular frame and a windowpane haivng a hinged connection along a side edge of the frame. The windowpane can be swung out from the frame to a position normal to the frame, whereby the outer surface of the windowpane can be mannually cleaned from within the building space.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: November 19, 1991
    Assignees: Thomas B. Nuckolls, Stanley D. Daubenbis
    Inventor: Norman D. Martin