Granted Patent
Utility
US 4,629,224 · App. 06/783,055
Tubular connection
Inventor:
L. Steven Landriault
Patented Case
View Patent ↗
Granted: Dec 16, 1986
Filed: Oct 1, 1985
Inventor
L. Steven Landriault
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.