Granted Patent
Utility
US 6,368,205 · App. 09/530,595
Voice mailbox in a GSM-system
Inventor:
Robert Frank
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Oct 26, 2000
Inventor
Robert Frank
Assignee (at issue)
Telia Company AB
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.