Granted Patent
Utility
US 4,808,839 · App. 07/177,209
Power field effect transistor driver circuit for protection from overvoltages
Inventors:
William C. Dunn, Philip W. McEntarfer
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Apr 4, 1988
Inventors
William C. Dunn
Philip W. McEntarfer
Assignee (at issue)
Motorola, 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.