Granted Patent
Utility
US 6,507,047 · App. 09/858,902
Power transistors for radio frequencies
Inventor:
Andrej Litwin
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: May 17, 2001
Inventor
Andrej Litwin
Assignee (at issue)
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
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.