Granted Patent
Utility
US 6,752,321 · App. 10/403,853
Smart card and method that modulates multi-color LED indicative of operational attributes and/or transactions between the smart card and USB port of a USB host
Inventor:
Taylor J. Leaming
Patented Case
View Patent ↗
Granted: Jun 22, 2004
Filed: Mar 31, 2003
Inventor
Taylor J. Leaming
Assignee (at issue)
STMICROELECTRONICS, 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.