Granted Patent
Utility
US 5,845,207 · App. 08/644,027
Service transfer to a wireless telephone
Inventors:
Umesh J. Amin, Michael Buhrmann
Patented Case
View Patent ↗
Granted: Dec 1, 1998
Filed: May 9, 1996
Inventors
Umesh J. Amin
Michael Buhrmann
Assignee (at issue)
AT&T WIRELESS SERVICES, 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.