Granted Patent
Utility
US 4,624,488 · App. 06/562,448
Tubular connection
Inventor:
David Furgerson
Patented Case
View Patent ↗
Granted: Nov 25, 1986
Filed: Dec 16, 1983
Inventor
David Furgerson
Assignee (at issue)
Hydril Company
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.