Granted Patent
Utility
US 6,167,387 · App. 09/065,624
Cashless card revalue system
Inventor:
Michael Lee-Wai-Yin
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Apr 24, 1998
Inventor
Michael Lee-Wai-Yin
Assignee (at issue)
Coinamatic Canada 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.