Patents by Inventor Frank R. Wilfong

Frank R. Wilfong 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).

  • Storm window
    Patent number: 4021980
    Abstract: A storm window consisting of a rectangular window pane supported in a metallic frame is mounted over a window in a building by means of U-shaped channels mounted on the building and surrounding three sides of the building window. The storm window is slipped into channels and maintained in place by a friction or spring fit. The fourth side is closed by means of a U-shaped channel which is snapped or bonded onto the storm window frame.
    Type: Grant
    Filed: August 8, 1975
    Date of Patent: May 10, 1977
    Inventor: Frank R. Wilfong