Granted Patent
Utility
US 6,739,521 · App. 09/308,314
Headlight cleaning system operating exclusively by spraying with washing liquid
Inventors:
Joachim Bandemer, Rainer Kober, Torsten Hahn
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: May 13, 1999
Inventors
Joachim Bandemer
Rainer Kober
Torsten Hahn
Assignee (at issue)
Mannesmann VDO 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.