Granted Patent
Utility
US 6,768,274 · App. 10/256,547
Ballast with lamp-to-earth-ground fault protection circuit
Inventors:
John G. Konopka, Sameer Sodhi
Patented Case
View Patent ↗
Granted: Jul 27, 2004
Filed: Sep 28, 2002
Inventors
John G. Konopka
Sameer Sodhi
Assignee (at issue)
OSRAM SYLVANIA 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.