Granted Patent
Utility
US 4,978,932 · App. 07/216,921
Microwave digitally controlled solid-state attenuator having parallel switched paths
Inventors:
Ramesh Gupta, Bernard D. Geller
Patented Case
View Patent ↗
Granted: Dec 18, 1990
Filed: Jul 7, 1988
Inventors
Ramesh Gupta
Bernard D. Geller
Assignee (at issue)
Communications Satellite Corporation
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.