Granted Patent
Utility
US 4,683,439 · App. 06/817,384
Digitally driven switching power amplifier system
Inventors:
Jay W. Atherton, Raymond A. Castor, Leonard F. Christie, Robert C. Engerman
Patented Case
View Patent ↗
Granted: Jul 28, 1987
Filed: Jan 9, 1986
Inventors
Jay W. Atherton
Raymond A. Castor
Leonard F. Christie
Robert C. Engerman
Assignee (at issue)
Honeywell Limited
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.