Granted Patent
Utility
US 4,439,744 · App. 06/334,258
Variable power amplifier
Inventors:
Mahesh Kumar, Lakshminarasimha C. Upadhyayula
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Dec 24, 1981
Inventors
Mahesh Kumar
Lakshminarasimha C. Upadhyayula
Assignee (at issue)
RCA 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.