Granted Patent
Utility
US 5,565,823 · App. 08/360,892
Voltage controlled attenuator using PN diodes
Inventor:
Roger A. Fratti
Patented Case
View Patent ↗
Granted: Oct 15, 1996
Filed: Dec 21, 1994
Inventor
Roger A. Fratti
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.