Granted Patent
Utility
US 6,191,381 · App. 09/487,924
Tapered electrode for plasma arc cutting torches
Inventor:
Arefin Kabir
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Jan 19, 2000
Inventor
Arefin Kabir
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.