Granted Patent
Utility
US 4,490,073 · App. 06/326,329
Multiple flowline connector
Inventor:
John E. Lawson
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Dec 1, 1981
Inventor
John E. Lawson
Assignee (at issue)
Armco 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.