Patents by Inventor Derek Parnell Akerson

Derek Parnell Akerson 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 apparatus for attachment to a building structure
    Patent number: 6138424
    Abstract: Vent apparatus for a building includes a frame within which are positioned two spaced sets of louvers. The louvers of each set of louvers have openings therebetween and the openings of each set of louvers are covered by the louvers of the other set of louvers.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: October 31, 2000
    Assignee: Beutler Heating & Air Conditioning
    Inventors: Derek Parnell Akerson, Eugene Scott Sahota