Granted Patent
Utility
US 6,089,275 · App. 08/421,463
Replacement pipe for installation in an existing conduit
Inventor:
Campbell H. Steketee, Jr.
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Apr 12, 1995
Inventor
Campbell H. Steketee, Jr.
Assignee (at issue)
INA Acquisition Corp.
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.