Granted Patent
Utility
US 5,969,331 · App. 09/174,733
Card reading device
Inventors:
Albert Hoolhorst, Paul Ryckaert
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Oct 19, 1998
Inventors
Albert Hoolhorst
Paul Ryckaert
Assignee (at issue)
Siemens Aktiengesellschaft
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.