Granted Patent
Utility
US 6,577,721 · App. 09/302,811
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Inventors:
Aimo Vainio, Arto Pussinen, Sakari Pelkonen, Keijo Raiha
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Apr 30, 1999
Inventors
Aimo Vainio
Arto Pussinen
Sakari Pelkonen
Keijo Raiha
Assignee (at issue)
Nokia Mobile Phones Ltd.
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.