Granted Patent
Utility
US 5,857,154 · App. 08/680,896
Multiprotocol mobile telephone network having high tier and low tier systems
Inventors:
Enrique Laborde, Lenard S. Golding
Patented Case
View Patent ↗
Granted: Jan 5, 1999
Filed: Jul 16, 1996
Inventors
Enrique Laborde
Lenard S. Golding
Assignee (at issue)
HUGHES ELECTRONICS LIMITED
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.