Granted Patent
Utility
US 4,475,280 · App. 06/450,687
Method of making an integrated circuit incorporating low voltage and high voltage semiconductor devices
Inventors:
Louis J. Ragonese, Nicholas A. Schmitz, Saverio F. Bevacqua, King Owyang
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Dec 17, 1982
Inventors
Louis J. Ragonese
Nicholas A. Schmitz
Saverio F. Bevacqua
King Owyang
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.