Granted Patent
Utility
US 5,572,579 · App. 08/417,542
System and method for providing portable telephone number service
Inventors:
Richard A. Orriss, Margaret K. Balazs, Laura L. T. Castrovinci, Kathleen D. Cebulka, Yea-Cheiung E. Chen, Neal N. Crystal, Kelly J. Gaylord, George White Hartley
Patented Case
View Patent ↗
Granted: Nov 5, 1996
Filed: Apr 6, 1995
Inventors
Richard A. Orriss
Margaret K. Balazs
Laura L. T. Castrovinci
Kathleen D. Cebulka
Yea-Cheiung E. Chen
Neal N. Crystal
Kelly J. Gaylord
George White Hartley
Assignee (at issue)
Bell Communications Research, 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.