Granted Patent
Utility
US 4,928,070 · App. 07/317,098
Low-noise crossed-field amplifier
Inventors:
George H. MacMaster, Lawrence J. Nichols
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Feb 28, 1989
Inventors
George H. MacMaster
Lawrence J. Nichols
Assignee (at issue)
Raytheon 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.