Granted Patent
Utility
US 6,747,459 · App. 10/017,370
Electric arc monitoring systems
Inventors:
Michael Parker, Howard M. Ham, Jr., James J. Keenan, Luc Pierre Benoit
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Dec 13, 2001
Inventors
Michael Parker
Howard M. Ham, Jr.
James J. Keenan
Luc Pierre Benoit
Assignee (at issue)
HENDRY MECHANICAL WORKS
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.