Granted Patent
Utility
US 6,402,201 · App. 09/517,383
Protection of pipeline joint connections
Inventors:
Paul L. Pool, William H. Gowan
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Mar 26, 1998
Inventors
Paul L. Pool
William H. Gowan
Assignee (at issue)
Urethane Products International
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.