Granted Patent
Utility
US 6,176,316 · App. 09/327,868
Subsea well head assembly
Inventor:
Brian Hart
Patented Case
View Patent ↗
Granted: Jan 23, 2001
Filed: Jun 8, 1999
Inventor
Brian Hart
Assignee (at issue)
Cooper Cameron Corporation
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.