Granted Patent
Utility
US 4,437,649 · App. 06/488,917
Exothermic cutting electrode
Inventors:
Perry J. Rieppel, Paul E. Moore
Patented Case
View Patent ↗
Granted: Mar 20, 1984
Filed: Apr 27, 1983
Inventors
Perry J. Rieppel
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.