Granted Patent
Utility
US 5,548,809 · App. 07/913,341
Spectrum sharing communications system and system for monitoring available spectrum
Inventor:
Paul Lemson
Patented Case
View Patent ↗
Granted: Aug 20, 1996
Filed: Jul 15, 1992
Inventor
Paul Lemson
Assignee (at issue)
Southwestern Bell Technology Resources, 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.