Patents by Inventor Edward G. Hansen

Edward G. Hansen 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: D511217
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: November 1, 2005
    Assignee: Environmental Air Systems, Inc.
    Inventors: James R. Bullock, Jr., Edward G. Hansen
  • Patent number: D557430
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: December 11, 2007
    Assignee: Environmental Air Systems, Inc.
    Inventor: Edward G. Hansen