Granted Patent
Utility
US 5,487,411 · App. 08/345,727
Liner pipe for repair of a host pipe
Inventor:
Joseph E. F. Goncalves
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Nov 22, 1994
Inventor
Joseph E. F. Goncalves
Assignee (at issue)
I-PEX Inc.
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.