Granted Patent
Utility
US 6,605,922 · App. 10/303,756
Battery pack provided with authentication circuitry
Inventors:
Mikitaka Tamai, Kazuhiro Toyoda
Patented Case
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Granted: Aug 12, 2003
Filed: Nov 26, 2002
Inventors
Mikitaka Tamai
Kazuhiro Toyoda
Assignee (at issue)
SANYO ELECTRIC 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.