Patents by Inventor John C. Firchau

John C. Firchau 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: 4350177
    Abstract: A support for a utility box such as a valve box or the like which includes an annular member having a central opening with an upstanding flange on the upper surface of the annular member adjacent the central opening. The annular member is buried in the ground in underlying supporting engagement with a box so as to prevent sinking of the box into the ground under heavy traffic load, said box provides access to the buried utility the upper end of the box opening into the street.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: September 21, 1982
    Inventors: John C. Firchau, Morris L. Donaldson