Patents by Inventor Gerald W. Freier

Gerald W. Freier 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).

  • Detectable warning plate
    Patent number: D648238
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: November 8, 2011
    Assignee: Neenah Foundry Company
    Inventors: Elizabeth L. Niver, Gerald W. Freier