Granted Patent
Utility
US 5,010,239 · App. 07/253,036
IC card reader/writer
Inventor:
Katsuya Mita
Patented Case
View Patent ↗
Granted: Apr 23, 1991
Filed: Oct 4, 1988
Inventor
Katsuya Mita
Assignee (at issue)
Omron Tateisi Electronics
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.