Granted Patent
Utility
US 5,660,743 · App. 08/464,241
Plasma arc torch having water injection nozzle assembly
Inventor:
Valerian Nemchinsky
Patented Case
View Patent ↗
Granted: Aug 26, 1997
Filed: Jun 5, 1995
Inventor
Valerian Nemchinsky
Assignee (at issue)
THE ESAB GROUP INC.
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.