Granted Patent
Utility
US 4,227,909 · App. 06/047,677
Electric forehearth and method of melting therein
Inventors:
Emery J. Hornyak, Jr., Philip D. Perry, James E. Sherman
Patented Case
View Patent ↗
Granted: Oct 14, 1980
Filed: Jun 12, 1979
Inventors
Emery J. Hornyak, Jr.
Philip D. Perry
James E. Sherman
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.