Granted Patent
Utility
US 4,950,000 · App. 07/271,817
Flanged pipeline connections
Inventor:
Arthur W. Richardson
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Nov 17, 1988
Inventor
Arthur W. Richardson
Assignee (at issue)
FURMANITE INTERNATIONAL LIMITED
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.