Granted Patent
Utility
US 6,337,114 · App. 08/941,605
Flexible lining with flexible collar for lining lateral pipelines
Inventor:
Eric Wood
Patented Case
View Patent ↗
Granted: Jan 8, 2002
Filed: Sep 30, 1997
Inventor
Eric Wood
Assignee (at issue)
Insituform (Netherlands) B.V.
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.