Granted Patent
Utility
US 4,580,630 · App. 06/642,003
Mudline casing hanger assembly
Inventors:
Lionel J. Milberger, Jimmy R. Martin, Jr., Thomas Patrick Mataway, Charles E. Gibbs
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Aug 20, 1984
Inventors
Lionel J. Milberger
Jimmy R. Martin, Jr.
Thomas Patrick Mataway
Charles E. Gibbs
Assignee (at issue)
Vetco Offshore, Inc.
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.