Granted Patent
Utility
US 5,481,160 · App. 08/330,605
Electronic ballast with FET bridge inverter
Inventor:
Ole K. Nilssen
Patented Case
View Patent ↗
Granted: Jan 2, 1996
Filed: Oct 28, 1994
Inventor
Ole K. Nilssen
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.