Granted Patent
Utility
US 4,640,852 · App. 06/675,519
Multiple layer films containing oriented layers of nylon and ethylene vinyl alcohol copolymer
Inventor:
William F. Ossian
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Nov 28, 1984
Inventor
William F. Ossian
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.