Granted Patent
Utility
US 6,469,581 · App. 09/878,106
HEMT-HBT doherty microwave amplifier
Inventor:
Kevin Wesley Kobayashi
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Jun 8, 2001
Inventor
Kevin Wesley Kobayashi
Assignee (at issue)
TRW Limited
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.