Granted Patent
Utility
US 6,484,707 · App. 09/676,220
Method and apparatus for generating a sustained arc at a sparking device
Inventors:
John R. Frus, Michael J. Cochran
Patented Case
View Patent ↗
Granted: Nov 26, 2002
Filed: Sep 29, 2000
Inventors
John R. Frus
Michael J. Cochran
Assignee (at issue)
Unison Industries, LLC
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.