Granted Patent
Utility
US 6,596,121 · App. 09/434,053
Method of making composite liner for oilfield tubular goods
Inventor:
Harris A. Reynolds, Jr.
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Nov 4, 1999
Inventor
Harris A. Reynolds, Jr.
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.