Granted Patent
Utility
US 6,794,070 · App. 10/299,553
Fuel cell apparatus with compressor means for reducing fuel leakage danger and improving efficiency
Inventors:
Wilhelm Amrhein, Gesine Arends
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Nov 19, 2002
Inventors
Wilhelm Amrhein
Gesine Arends
Assignee (at issue)
Robert Bosch GmbH
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.