Granted Patent
Utility
US 6,677,070 · App. 09/839,956
Hybrid thin film/thick film solid oxide fuel cell and method of manufacturing the same
Inventor:
Daniel A. Kearl
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Apr 19, 2001
Inventor
Daniel A. Kearl
Assignee (at issue)
Hewlett-Packard Development Company, L.P.
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.