Granted Patent
Utility
US 4,639,684 · App. 06/668,864
Differential input stage for the realization of low noise and high precision bipolar transistor amplifiers
Inventor:
David P. Laude
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Nov 6, 1984
Inventor
David P. Laude
Assignee (at issue)
HARRIS CORPORATION
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.