Granted Patent
Utility
US 4,364,896 · App. 06/303,759
Method for making a multi-layered blown plastic container
Inventor:
Robert F. Kontz
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: Sep 21, 1981
Inventor
Robert F. Kontz
Assignee (at issue)
Owens-Illinois 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.