Granted Patent
Utility
US 5,714,748 · App. 08/741,031
Magnetic cards employing optical recording material
Inventor:
Dong Cheol Lee
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: Oct 30, 1996
Inventor
Dong Cheol Lee
Assignee (at issue)
Goldstar Co., Ltd.
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.