Patents by Inventor Johnnie G. Downing

Johnnie G. Downing 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).

  • Exterior central air filtering system
    Patent number: 5156662
    Abstract: An exterior filter system (10) for the housing (101) of a conventional A/C system (100); wherein, the filter system (10) comprises an elongated rectangular filter member (20) releasably secured and suspended by strap members (30) around the sidewalls (102) of the A/C housing (101) to prevent dirt and debris from passing through the intake vents (103) of the A/C system.
    Type: Grant
    Filed: April 15, 1992
    Date of Patent: October 20, 1992
    Inventors: Johnnie G. Downing, Edward J. O'Neal