Granted Patent
Utility
US 5,556,604 · App. 08/396,958
Method and apparatus for purifying exhaust gases from internal combustion engines
Inventors:
Wolfgang Zahn, Gunter Loose, Axel Hirschmann
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: Mar 1, 1995
Inventors
Wolfgang Zahn
Gunter Loose
Axel Hirschmann
Assignee (at issue)
MERCEDES-BENZ GROUP 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.