Granted Patent
Utility
US 4,658,156 · App. 06/679,450
Voltage detection circuit for detecting input voltage larger in absolute value than power supply voltage
Inventor:
Kiyokazu Hashimoto
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Dec 7, 1984
Inventor
Kiyokazu Hashimoto
Assignee (at issue)
NEC 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.