Granted Patent
Utility
US 6,695,037 · App. 09/830,247
Heating device for an automobile especially a water heating device in the form of a backup heater or auxiliary heater
Inventors:
Michael Humburg, Hermann Eppler, Paul Achatz
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Jun 19, 2001
Inventors
Michael Humburg
Hermann Eppler
Paul Achatz
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.