Granted Patent
Utility
US 4,423,301 · App. 06/382,443
Air-carbon arc cutting and gouging
Inventors:
Perry J. Rieppel, Raymond A. Sadauskas
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: May 26, 1982
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.