Granted Patent
Utility
US 6,714,075 · App. 10/286,814
Variable gain amplifier and filter circuit
Inventors:
Takashi Morie, Hirokuni Fujiyama
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Nov 4, 2002
Inventors
Takashi Morie
Hirokuni Fujiyama
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.