Granted Patent
Utility
US 5,572,349 · App. 08/371,550
Communications system
Inventors:
Michael A. Hale, Donald E. A. Clarke
Patented Case
View Patent ↗
Granted: Nov 5, 1996
Filed: Jan 11, 1995
Inventors
Michael A. Hale
Donald E. A. Clarke
Assignee (at issue)
BRITISH TELECOMMUNICATIONS public limited company
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.