Patents by Inventor Douglas Hackbarth

Douglas Hackbarth 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).

  • Patent number: 6578327
    Abstract: An attic scuttle for providing a means of accessing the attic which is easily installed, fire-rated, and forms a tight, insulating seal. The attic scuttle includes a sleeve with a perimeter wall, and a hinged door positioned within the base portion of the sleeve for facilitating access to the attic from a room below.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: June 17, 2003
    Inventors: Douglas Hackbarth, Lori Hackbarth