Granted Patent
Utility
US 5,983,841 · App. 08/952,027
Heat exchanger
Inventor:
Bernd Haber
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Oct 7, 1997
Inventor
Bernd Haber
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.