Granted Patent
Utility
US 4,603,980 · App. 06/761,997
Methods of measuring temperature and electrical resistivity in a molten glass stream
Inventor:
James Berg
Patented Case
View Patent ↗
Granted: Aug 5, 1986
Filed: Aug 2, 1985
Inventor
James Berg
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.