Granted Patent
Utility
US 6,811,906 · App. 10/431,069
Method and apparatus for monitoring equivalent series resistance and for shunting a fuel cell
Inventors:
Lijun Bai, David R. Lott, Vanell L. Martin
Patented Case
View Patent ↗
Granted: Nov 2, 2004
Filed: May 6, 2003
Inventors
Lijun Bai
David R. Lott
Vanell L. Martin
Assignee (at issue)
ReliOn, 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.