Granted Patent
Utility
US 5,235,255 · App. 07/862,048
Switching circuit for operating a discharge lamp with constant power
Inventor:
Anton Cornelis Blom
Patented Case
View Patent ↗
Granted: Aug 10, 1993
Filed: Apr 2, 1992
Inventor
Anton Cornelis Blom
Assignee (at issue)
U.S. Philips 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.