Granted Patent
Utility
US 4,641,841 · App. 06/769,051
Metal seal for a tubular connection
Inventor:
Albert M. Regan
Patented Case
View Patent ↗
Granted: Feb 10, 1987
Filed: Aug 26, 1985
Inventor
Albert M. Regan
Assignee (at issue)
Hughes Tool Company 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.