Patents by Inventor Douglas D. Morris

Douglas D. Morris 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).

  • Combined air filter and cleaner unit
    Patent number: D295216
    Type: Grant
    Filed: October 30, 1986
    Date of Patent: April 12, 1988
    Assignee: D. Morris Sheet Metal, Inc.
    Inventors: David H. Morris, Douglas D. Morris
  • Portable air cleaner unit
    Patent number: D325252
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: April 7, 1992
    Assignee: D. Morris Sheet Metal, Inc.
    Inventors: David H. Morris, Douglas D. Morris, Gregory A. Morris