Granted Patent
Utility
US 4,819,248 · App. 07/193,618
Electrode monitoring system
Inventors:
Eugene C. Varrasso, Glen F. Day
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: May 13, 1988
Inventors
Eugene C. Varrasso
Glen F. Day
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.