Granted Patent
Utility
US 4,569,392 · App. 06/480,933
Well bore control line with sealed strength member
Inventor:
Charles P. Peterman
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Mar 31, 1983
Inventor
Charles P. Peterman
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.