Granted Patent
Utility
US 4,428,020 · App. 06/311,225
Power supply sensing circuitry
Inventor:
Raymond A. Blanchard, Jr.
Patented Case
View Patent ↗
Granted: Jan 24, 1984
Filed: Oct 14, 1981
Inventor
Raymond A. Blanchard, Jr.
Assignee (at issue)
SCM Consultants, 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.