Granted Patent
Utility
US 5,404,832 · App. 08/089,000
Wellhead connector
Inventor:
Brian Hart
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Jul 9, 1993
Inventor
Brian Hart
Assignee (at issue)
Cooper Industries Holdings
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.