Granted Patent
Utility
US 4,842,307 · App. 07/197,922
Wellhead load supporting system
Inventors:
Thomas F. Sweeney, Philippe C. Nobileau, Charles E. Jennings
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: May 24, 1988
Inventors
Thomas F. Sweeney
Philippe C. Nobileau
Charles E. Jennings
Assignee (at issue)
Vetco Gray, LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.