Granted Patent
Utility
US 4,843,532 · App. 07/213,954
Regulating pulse width modulator for power supply with high speed shutoff
Inventor:
David Freedman
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: Jul 1, 1988
Inventor
David Freedman
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.