Granted Patent
Utility
US 4,994,757 · App. 07/430,034
Efficiency improvement of power amplifiers
Inventors:
Robert H. Bickley, Richard A. Bory
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: Nov 1, 1989
Inventors
Robert H. Bickley
Richard A. Bory
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.