Granted Patent
Utility
US 6,073,019 · App. 08/849,141
Radio telephone call handover
Inventor:
Christopher John Lowdon
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: Jul 17, 1997
Inventor
Christopher John Lowdon
Assignee (at issue)
Nokia Telecommunications Oy
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.