Granted Patent
Utility
US 6,659,875 · App. 09/902,725
Identification token
Inventor:
William Westmore Purton
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Jul 12, 2001
Inventor
William Westmore Purton
Assignee (at issue)
DOLPHIN ADVANCED TECHNOLOGIES PTY 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.