Granted Patent
Utility
US 6,474,557 · App. 09/993,280
Prepayment wristband and computer debit system
Inventors:
Joseph Mullins, Donald Mills
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Nov 5, 2001
Inventors
Joseph Mullins
Donald Mills
Assignee (at issue)
Busch Entertainment Corporation
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.