Granted Patent
Utility
US 6,607,220 · App. 09/973,441
Radially expandable tubular connection
Inventor:
Robert S. Sivley, IV
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Oct 9, 2001
Inventor
Robert S. Sivley, IV
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.