Granted Patent
Utility
US 4,491,951 · App. 06/512,854
Electric glass melting furnace
Inventor:
Charles S. Dunn
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: Jul 11, 1983
Inventor
Charles S. Dunn
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.