Granted Patent
Utility
US 5,901,284 · App. 08/665,823
Method and system for communication access restriction
Inventor:
Kathryn Anne Hamdy-Swink
Patented Case
View Patent ↗
Granted: May 4, 1999
Filed: Jun 19, 1996
Inventor
Kathryn Anne Hamdy-Swink
Assignee (at issue)
BellSouth Corporation
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.