Granted Patent
Utility
US 5,568,041 · App. 08/385,906
Low-cost power factor correction circuit and method for electronic ballasts
Inventor:
Bryce L. Hesterman
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Feb 9, 1995
Inventor
Bryce L. Hesterman
Assignee (at issue)
Magnetek, 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.