Granted Patent
Utility
US 4,663,570 · App. 06/642,072
High frequency gas discharge lamp dimming ballast
Inventors:
David G. Luchaco, Dennis Capewell
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Aug 17, 1984
Inventors
David G. Luchaco
Dennis Capewell
Assignee (at issue)
Lutron Electronics Co., 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.