Patents by Inventor Christa J. Niehaus

Christa J. Niehaus 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).

  • Curb stone
    Patent number: D318333
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: July 16, 1991
    Inventors: Paul E. Niehaus, Christa J. Niehaus