Granted Patent
Utility
US 4,847,520 · App. 07/091,548
Fast PNP transistor turn-off circuit
Inventors:
Dennis P. O'Neill, Carl T. Nelson
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Aug 31, 1987
Inventors
Dennis P. O'Neill
Carl T. Nelson
Assignee (at issue)
Linear Technology Holding LLC
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.