Granted Patent
Utility
US 4,512,792 · App. 06/512,265
Cooling wind shut-off valve for glass forming mold
Inventors:
George W. Irwin, Eustace H. Mumford
Patented Case
View Patent ↗
Granted: Apr 23, 1985
Filed: Jul 11, 1983
Inventors
George W. Irwin
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.