Granted Patent
Utility
US 5,721,521 · App. 08/695,153
Notch-enhancement in band-reject filters
Inventors:
Lawrence M. Drabeck, Martin Schneider, Cuong Tran
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: Aug 5, 1996
Inventors
Lawrence M. Drabeck
Martin Schneider
Cuong Tran
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.