Granted Patent
Utility
US 5,135,049 · App. 07/732,414
Vent line in the cooling circuit of an internal combustion engine
Inventors:
Thomas Attinger, Wolfgang Kleineberg, Hans Schaal
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Jul 18, 1991
Inventors
Thomas Attinger
Wolfgang Kleineberg
Hans Schaal
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.