Granted Patent
Utility
US 6,223,021 · App. 08/998,297
Signal filtering in a transceiver for a wireless telephone system
Inventors:
Joseph Silvia, Stephen J. Graveline
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Dec 24, 1997
Inventors
Joseph Silvia
Stephen J. Graveline
Assignee (at issue)
Transcept, 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.