Patents by Inventor John M. Frederick

John M. Frederick 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).

  • Vent assembly and method of making same
    Patent number: 4487113
    Abstract: A barrier vent assembly formed of a plurality of V-shaped baffles secured between two spaced frame members. The V-shaped baffles are nestled one within the other to prevent straight line access through the vent openings. The baffles have mounting tabs at their opposite ends which are received within mating slots contained in the frame members. Because of this arrangement, all of the tabs may be welded to the frame member by a single continuous weld bead.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: December 11, 1984
    Assignee: Square D Company
    Inventors: David W. West, Lonnie R. Hazel, John M. Frederick