Patents by Inventor George H. Bertelson

George H. Bertelson 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).

  • Above and below water and land pile cutting apparatus and method
    Patent number: 4180047
    Abstract: Above and below water and land pile cutting machine is provided having a main frame which is quadrangular in transverse cross-section and is shaped to receive in the center thereof the pile to be cut. The upper portion of the main frame carries extensible pile gripping clamp means; the center portion carries four circular saws each mounted on a carriage mounted for transverse reciprocation and the lower portion of the frame carries further pile gripping extensible clamping means.
    Type: Grant
    Filed: July 6, 1978
    Date of Patent: December 25, 1979
    Inventor: George H. Bertelson