Granted Patent
Utility
US 4,391,209 · App. 06/274,118
Exothermic cutting electrode
Inventor:
Paul E. Moore
Patented Case
View Patent ↗
Granted: Jul 5, 1983
Filed: Jun 16, 1981
Inventor
Paul E. Moore
Assignee (at issue)
Arcair Company
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.