Granted Patent
Utility
US 6,572,118 · App. 09/839,308
Flexible seal member for non-metallic conduit to concrete manhole junction
Inventors:
Fouad M. Deeb, Michael R. Miller, John M. Kurdziel, James W. Skinner, Ronald W. Neuhaus
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Apr 23, 2001
Inventors
Fouad M. Deeb
Michael R. Miller
John M. Kurdziel
James W. Skinner
Ronald W. Neuhaus
Assignee (at issue)
Advanced Drainage Systems, 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.