Granted Patent
Utility
US 5,399,944 · App. 08/146,268
Ballast circuit for driving gas discharge
Inventors:
John G. Konopka, Peter W. Shackle
Patented Case
View Patent ↗
Granted: Mar 21, 1995
Filed: Oct 29, 1993
Inventors
John G. Konopka
Peter W. Shackle
Assignee (at issue)
Motorola Lighting, 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.