Granted Patent
Utility
US 5,608,353 · App. 08/412,667
HBT power amplifier
Inventor:
William J. Pratt
Patented Case
View Patent ↗
Granted: Mar 4, 1997
Filed: Mar 29, 1995
Inventor
William J. Pratt
Assignee (at issue)
RF Micro Devices, Inc.
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.