Granted Patent
Utility
US 3,970,492 · App. 05/479,421
Method and apparatus for forming thermoplastic containers
Inventors:
Stephen W. Amberg, Thomas E. Doherty
Patented Case
View Patent ↗
Granted: Jul 20, 1976
Filed: Jun 14, 1974
Inventors
Stephen W. Amberg
Thomas E. Doherty
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.