Granted Patent
Utility
US 4,879,147 · App. 07/003,437
Polymeric multilayer sheet suitable for the manufacture of microwaveable containers
Inventors:
Frederick C. Newman, Louis J. Marsella
Patented Case
View Patent ↗
Granted: Nov 7, 1989
Filed: Jan 15, 1987
Inventors
Frederick C. Newman
Louis J. Marsella
Assignee (at issue)
Continental Can Company, 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.