Granted Patent
Utility
US 5,905,417 · App. 08/815,617
Passive cascaded low-pass and high-pass filter with variable attenuation
Inventors:
David A. Norte, Woong K. Yoon
Patented Case
View Patent ↗
Granted: May 18, 1999
Filed: Mar 12, 1997
Inventors
David A. Norte
Woong K. Yoon
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.