Granted Patent
Utility
US 5,090,896 · App. 07/429,758
Central heating for motor vehicles and such mobile units
Inventors:
Erich Kenner, Herbert Langen
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Oct 31, 1989
Inventors
Erich Kenner
Herbert Langen
Assignee (at issue)
J. Eberspacher
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.