Granted Patent
Utility
US 6,650,893 · App. 09/219,872
Method and apparatus for storing activation data in a cellular telephone
Inventor:
James Mason Lipsit
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Dec 24, 1998
Inventor
James Mason Lipsit
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.