Granted Patent
Utility
US 6,146,491 · App. 08/525,613
Lining of pipelines or passageways using a push rod adhered to rod and liner
Inventors:
Eric Wood, by Miranda Jane Bull, legal representative, by William A. Martin, legal representative
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: Jul 27, 1998
Inventors
Eric Wood
by Miranda Jane Bull, legal representative
by William A. Martin, legal representative
Assignee (at issue)
Insituform CNT NLX COD 03 ITX 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.