Granted Patent
Utility
US 5,869,937 · App. 08/992,417
High efficiency electronic ballast
Inventor:
John G. Konopka
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Dec 17, 1997
Inventor
John G. Konopka
Assignee (at issue)
Motorola, 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.