Granted Patent
Utility
US 5,100,709 · App. 07/452,680
Multilayer film coating for rigid, smooth surfaces
Inventors:
Dennis D. Barger, Carl Douglas Ray
Patented Case
View Patent ↗
Granted: Mar 31, 1992
Filed: Dec 18, 1989
Inventors
Dennis D. Barger
Carl Douglas Ray
Assignee (at issue)
Tredegar Industries, 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.