Granted Patent
Utility
US 4,339,409 · App. 06/228,652
Method of forming blown polyethylene terephthalate containers
Inventor:
Nicholas J. Curto
Patented Case
View Patent ↗
Granted: Jul 13, 1982
Filed: Jan 26, 1981
Inventor
Nicholas J. Curto
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.