Granted Patent
Utility
US 4,904,852 · App. 07/287,667
IC card reader
Inventors:
Katsuya Mita, Muneki Morishita
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Dec 21, 1988
Inventors
Katsuya Mita
Muneki Morishita
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.