Granted Patent
Utility
US 4,615,718 · App. 06/751,901
Heating of heat transfer media
Inventor:
Stephen Seng
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Jul 5, 1985
Inventor
Stephen Seng
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.