Granted Patent
Utility
US 5,218,319 · App. 07/886,239
Differential amplifier and active filter using the same
Inventor:
Kyuichi Takimoto
Patented Case
View Patent ↗
Granted: Jun 8, 1993
Filed: May 21, 1992
Inventor
Kyuichi Takimoto
Assignee (at issue)
Fujitsu 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.