Granted Patent
Utility
US 6,573,475 · App. 09/884,236
Welding power supply with output inductor
Inventor:
Richard Martin Hutchison
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Jun 19, 2001
Inventor
Richard Martin Hutchison
Assignee (at issue)
ILLINOIS TOOL WORKS 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.