Granted Patent
Utility
US 6,639,554 · App. 10/102,653
Apparatus and method for tracking location of mobile station
Inventors:
Eung Bae Kim, Seung Hwan Lee
Patented Case
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Granted: Oct 28, 2003
Filed: Mar 22, 2002
Inventors
Eung Bae Kim
Seung Hwan Lee
Assignee (at issue)
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
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.