Patents by Inventor Gary W. McKale

Gary W. McKale 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).

  • Filter leaf
    Patent number: 4968423
    Abstract: A filter leaf having a drainage member which is fabricated by combining a plurality of preforated and texturized sheets into a sandwich structure. The drainage member is covered in both sides by a pair of surface screens, and the entire assembly is secured together by a suitable frame.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: November 6, 1990
    Assignee: The Duriron Company, Inc.
    Inventors: Gary W. McKale, Anthony F. McGowan