Granted Patent
Utility
US 6,657,400 · App. 10/198,878
Ballast with protection circuit for preventing inverter startup during an output ground-fault condition
Inventors:
John G. Konopka, Sameer Sodhi, Himamshu Prasad
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Jul 19, 2002
Inventors
John G. Konopka
Sameer Sodhi
Himamshu Prasad
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.