Granted Patent
Utility
US 4,647,796 · App. 06/472,426
Multiple level voltage comparator circuit
Inventor:
R. Warren Necoechea
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Apr 25, 1983
Inventor
R. Warren Necoechea
Assignee (at issue)
FAIRCHILD SEMICONDUCTOR 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.