Granted Patent
Utility
US 6,794,601 · App. 10/235,325
Plasma arc torch system with pilot re-attach circuit and method
Inventors:
Stephen W. Norris, Roger Chamberlin, David Morrie
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Sep 5, 2002
Inventors
Stephen W. Norris
Roger Chamberlin
David Morrie
Assignee (at issue)
Thermal Dynamics Corporation
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.