Granted Patent
Utility
US 5,014,021 · App. 07/476,991
Frequency linearization circuit for a microwave VCO in ridged waveguide
Inventors:
Ralston S. Robertson, John N. Poelker
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Feb 8, 1990
Inventors
Ralston S. Robertson
John N. Poelker
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.