Granted Patent
Utility
US 5,016,018 · App. 07/326,935
Aperture synthesized radiometer using digital beamforming techniques
Inventors:
Donald C. D. Chang, Edwin A. Kelley
Patented Case
View Patent ↗
Granted: May 14, 1991
Filed: Mar 22, 1989
Inventors
Donald C. D. Chang
Edwin A. Kelley
Assignee (at issue)
Hughes Aircraft 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.