Granted Patent
Utility
US 6,427,894 · App. 09/692,406
Electrode wire feeder for an arc welding system
Inventors:
Leon Blank, David C. Griffin, Dale T. Wiersema
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Oct 19, 2000
Inventors
Leon Blank
David C. Griffin
Dale T. Wiersema
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.