Granted Patent
Utility
US 5,990,742 · App. 09/076,919
Differential amplifier circuit
Inventor:
Hisao Suzuki
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: May 13, 1998
Inventor
Hisao Suzuki
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.