Granted Patent
Utility
US 6,167,261 · App. 08/810,959
Wireless communication service management
Inventor:
Umesh J. Amin
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Feb 27, 1997
Inventor
Umesh J. Amin
Assignee (at issue)
AT&T Wireless Svcs. 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.