Granted Patent
Utility
US 5,747,773 · App. 08/573,927
Arc welder power source
Inventors:
David C. Griffin, Dale T. Wiersema, Richard Eldridge, William R. Klingbeil
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Dec 18, 1995
Inventors
David C. Griffin
Dale T. Wiersema
Richard Eldridge
William R. Klingbeil
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.