Granted Patent
Utility
US 4,615,720 · App. 06/742,819
Method and apparatus for melting glass
Inventors:
Charles S. Dunn, Eugene C. Varrasso
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Jun 10, 1985
Inventors
Charles S. Dunn
Eugene C. Varrasso
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.