Granted Patent
Utility
US 4,958,491 · App. 07/174,121
Arrangement for holding a catalyst in a housing in an exhaust system of a liquid fuel-operated motor
Inventors:
Georg Wirth, Siegfried Wirth
Patented Case
View Patent ↗
Granted: Sep 25, 1990
Filed: Mar 28, 1988
Inventors
Georg Wirth
Siegfried Wirth
Assignee (at issue)
J. Eberspaecher 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.