Granted Patent
Utility
US 5,664,547 · App. 08/596,466
Flame glow plug for a diesel engine
Inventors:
Roland Klak, Martin Eller, Helmut Buck
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Feb 5, 1996
Inventors
Roland Klak
Martin Eller
Helmut Buck
Assignees (at issue)
MERCEDES-BENZ GROUP AG
Beru Ruprecht 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.