Granted Patent
Utility
US 5,057,750 · App. 07/622,246
Two-stage resonant starting circuit for an electrodeless high intensity discharge lamp
Inventors:
George A. Farrall, John P. Cocoma
Patented Case
View Patent ↗
Granted: Oct 15, 1991
Filed: Dec 4, 1990
Inventors
George A. Farrall
John P. Cocoma
Assignee (at issue)
General Electric Company
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.