Granted Patent
Utility
US 5,872,645 · App. 08/950,107
Telecommunications network
Inventor:
Richard John Proctor
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Oct 16, 1997
Inventor
Richard John Proctor
Assignee (at issue)
GPT 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.