Patents by Inventor John E. Barthel

John E. Barthel 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: D269822
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: July 19, 1983
    Assignee: Dahl-Braden, Chapman Architects, Inc.
    Inventor: John E. Barthel
  • Patent number: D269823
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: July 19, 1983
    Assignee: First International Services Corporation
    Inventor: John E. Barthel
  • Patent number: D270763
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: September 27, 1983
    Assignee: First International Services Corporation
    Inventor: John E. Barthel
  • Patent number: D272293
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: January 17, 1984
    Assignee: Dahl-Braden, Chapman Architects, Inc.
    Inventor: John E. Barthel