Granted Patent
Utility
US 4,672,627 · App. 06/810,636
Electrode heater
Inventor:
Charles S. Dunn
Patented Case
View Patent ↗
Granted: Jun 9, 1987
Filed: Dec 19, 1985
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.