Granted Patent
Utility
US 6,657,543 · App. 09/975,370
Tracking method and system, as for an exhibition
Inventor:
Kevin Kwong-Tai Chung
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Oct 11, 2001
Inventor
Kevin Kwong-Tai Chung
Assignee (at issue)
Amerasia International Technology, 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.