Granted Patent
Utility
US 6,323,744 · App. 09/498,472
Grounding of TFR ladder filters
Inventors:
Bradley Paul Barber, Michael G. Zierdt
Patented Case
View Patent ↗
Granted: Nov 27, 2001
Filed: Feb 4, 2000
Inventors
Bradley Paul Barber
Michael G. Zierdt
Assignee (at issue)
Agere Systems Guardian 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.