Granted Patent
Utility
US 5,612,597 · App. 08/365,831
Oscillating driver circuit with power factor correction, electronic lamp ballast employing same and driver method
Inventor:
Peter Wood
Patented Case
View Patent ↗
Granted: Mar 18, 1997
Filed: Dec 29, 1994
Inventor
Peter Wood
Assignee (at issue)
International Rectifier Corporation
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.