Granted Patent
Utility
US 4,201,902 · App. 06/005,650
Electrode for air-carbon arc cutting and gouging
Inventors:
Perry J. Rieppel, Raymond A. Sadauskas
Patented Case
View Patent ↗
Granted: May 6, 1980
Filed: Jan 22, 1979
Inventors
Perry J. Rieppel
Raymond A. Sadauskas
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.