Granted Patent
Utility
US 5,909,643 · App. 08/722,856
Transmitter power varying device having a bypass line for a power amplifier
Inventor:
Yuukichi Aihara
Patented Case
View Patent ↗
Granted: Jun 1, 1999
Filed: Sep 26, 1996
Inventor
Yuukichi Aihara
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.