Granted Patent
Utility
US 6,128,821 · App. 09/044,625
Motor-vehicle exhaust-gas cleaning device and method for making same
Inventor:
Bernard Grescher
Patented Case
View Patent ↗
Granted: Oct 10, 2000
Filed: Mar 19, 1998
Inventor
Bernard Grescher
Assignee (at issue)
Zenuna-Starker GmbH & Co. KG
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.