Granted Patent
Utility
US 5,801,491 · App. 08/674,536
Supply circuit for discharge lamps with means for preheating the electrodes
Inventor:
Antonio Canova
Patented Case
View Patent ↗
Granted: Sep 1, 1998
Filed: Jul 2, 1996
Inventor
Antonio Canova
Assignee (at issue)
Magnetek, S.p.A.
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.