Granted Patent
Utility
US 6,321,980 · App. 09/512,324
Electronic money storing apparatus and IC card control method
Inventors:
Kazuyuki Yazumi, Manabu Hayashi, Hitoshi Maekawa
Patented Case
View Patent ↗
Granted: Nov 27, 2001
Filed: Feb 24, 2000
Inventors
Kazuyuki Yazumi
Manabu Hayashi
Hitoshi Maekawa
Assignee (at issue)
HITACHI, 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.