Granted Patent
Utility
US 4,274,859 · App. 06/122,409
Plunger operating mechanism for a glass forming machine
Inventor:
Eustace H. Mumford
Patented Case
View Patent ↗
Granted: Jun 23, 1981
Filed: Feb 19, 1980
Inventor
Eustace H. Mumford
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.