Granted Patent
Utility
US 5,157,376 · App. 07/680,146
Method and device for monitoring direction indicator lights of a vehicle trailer
Inventors:
Jurgen Dietz, Dieter Braunig
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: Apr 3, 1991
Inventors
Jurgen Dietz
Dieter Braunig
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.