Granted Patent
Utility
US 5,169,566 · App. 07/619,317
Engineered cementitious contaminant barriers and their method of manufacture
Inventors:
Galen D. Stucky, Hamlin M. Jennings, Simon K. Hodson
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: Nov 28, 1990
Inventors
Galen D. Stucky
Hamlin M. Jennings
Simon K. Hodson
Assignee (at issue)
E. Khashoggi Industries, LLC
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.