Granted Patent
Utility
US 5,360,294 · App. 08/209,686
Bentonite liner with drainage system protection
Inventors:
Richard Carriker, Martin Simpson, Thomas Hauck
Patented Case
View Patent ↗
Granted: Nov 1, 1994
Filed: Mar 11, 1994
Inventors
Richard Carriker
Martin Simpson
Thomas Hauck
Assignee (at issue)
James Clem Corporation
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.