Granted Patent
Utility
US 5,175,423 · App. 07/697,944
Rotary data card scanning apparatus
Inventor:
Helmut Kayan
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: May 9, 1991
Inventor
Helmut Kayan
Assignee (at issue)
VeriFone, 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.