Granted Patent
Utility
US 4,617,240 · App. 06/635,631
Coextruded film of polypropylene, polypropylene blend, and nylon
Inventors:
Duane A. Krueger, Thomas Walter Odorzynski
Patented Case
View Patent ↗
Granted: Oct 14, 1986
Filed: Jul 30, 1984
Inventors
Duane A. Krueger
Thomas Walter Odorzynski
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.