Patents by Inventor William H. Balzen

William H. Balzen 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).

  • Theft resistant sign clamp
    Patent number: 5497973
    Abstract: A sign clamp and method of installing signs to make the sign theft resistant, safe, and attractive in appearance by designing the clamp to block access to the bolt attaching the sign to the clamp and restricting the removal of the clamp.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: March 12, 1996
    Inventors: William H. Balzen, Robert H. Balzen