Granted Patent
Utility
US 5,736,819 · App. 08/404,090
Parallel-tuned electronic ballast with special output voltage waveform
Inventor:
Ole K. Nilssen
Patented Case
View Patent ↗
Granted: Apr 7, 1998
Filed: Mar 14, 1995
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.