Granted Patent
Utility
US 6,728,547 · App. 09/530,586
Call setup in mobile systems
Inventors:
Robert Frank, Mats Olof Winroth
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Oct 26, 2000
Inventors
Robert Frank
Mats Olof Winroth
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.