Patents by Inventor Harold E. Werthman

Harold E. Werthman 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).

  • Self storing security storm door
    Patent number: D304617
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: November 14, 1989
    Assignee: All-Weather Industries, Inc.
    Inventor: Harold E. Werthman