Granted Patent
Utility
US 4,233,367 · App. 05/757,140
Coextruded multilayer film
Inventors:
William G. Ticknor, Arnold R. Rein
Patented Case
View Patent ↗
Granted: Nov 11, 1980
Filed: Jan 6, 1977
Inventors
William G. Ticknor
Arnold R. Rein
Assignee (at issue)
American Can Company
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.