Granted Patent
Utility
US 5,737,822 · App. 08/534,045
Corporation stop assembly
Inventors:
Franklin Driver, Joseph D. Carroll
Patented Case
View Patent ↗
Granted: Apr 14, 1998
Filed: Sep 26, 1995
Inventors
Franklin Driver
Joseph D. Carroll
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.