Granted Patent
Utility
US 6,601,641 · App. 09/542,053
Oil cooled multistage depressed collector high power amplifier
Inventors:
Fred M. Stefanik, Alvin B. See
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Mar 31, 2000
Inventors
Fred M. Stefanik
Alvin B. See
Assignee (at issue)
Thomcast Communications, 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.