Granted Patent
Utility
US 6,029,726 · App. 08/978,732
Apparatus for installing a flexible cured in place lateral seal in an existing main pipeline
Inventors:
John Tweedie, Philip M. Smith, Jeff P. Wells, Kerry D. Severs, Kevin P. Murray
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Nov 26, 1997
Inventors
John Tweedie
Philip M. Smith
Jeff P. Wells
Kerry D. Severs
Kevin P. Murray
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.