Patents by Inventor Richard H. Swartz

Richard H. Swartz 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).

  • Holding wrench for drill strings
    Patent number: 3980143
    Abstract: Apparatus for holding and supporting a string of connected drill pipe sections which are suspended in a bore hole and for assisting in separating one drill pipe section from the string when the string is being disassembled.
    Type: Grant
    Filed: September 30, 1975
    Date of Patent: September 14, 1976
    Assignee: Driltech, Inc.
    Inventors: Richard H. Swartz, Richard J. Pearce, James M. Bowe
  • Well drilling vehicle
    Patent number: D244190
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: May 3, 1977
    Assignee: Driltech, Inc.
    Inventors: Richard H. Swartz, Richard J. Pearce, James M. Bowe