Granted Patent
Utility
US 4,575,604 · App. 06/662,208
Constant potential/constant current automatic control system for air-carbon arc metal removal
Inventor:
Henry B. Delius
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: Oct 18, 1984
Inventor
Henry B. Delius
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.