Granted Patent
Utility
US 6,550,822 · App. 09/843,493
Threaded coupling with water exclusion seal system
Inventors:
Eugene J. Mannella, James L. Peterson
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Apr 25, 2001
Inventors
Eugene J. Mannella
James L. Peterson
Assignees (at issue)
GB Tubulars, Inc.
SHELL OIL 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.