Granted Patent
Utility
US 5,432,020 · App. 08/257,328
Process and apparatus for humidifying process gas for operating fuel cell systems
Inventor:
Wolfram Fleck
Patented Case
View Patent ↗
Granted: Jul 11, 1995
Filed: Jun 7, 1994
Inventor
Wolfram Fleck
Assignee (at issue)
Daimler-Benz AG
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.