Granted Patent
Utility
US 6,375,073 · App. 09/242,900
Method for crediting or recrediting a data card with a given amount
Inventors:
Paul Aebi, Ronald de Bruin, Andreas Martschitsch, Rudolf Ritter
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Apr 20, 1999
Inventors
Paul Aebi
Ronald de Bruin
Andreas Martschitsch
Rudolf Ritter
Assignee (at issue)
Swisscom Morris AG
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.