Granted Patent
Utility
US 4,583,367 · App. 06/670,937
Exhaust gas turbocharger
Inventors:
Jurgen Kapfer, Hans Korkemeier, Klaus Groger
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Nov 13, 1984
Inventors
Jurgen Kapfer
Hans Korkemeier
Klaus Groger
Assignee (at issue)
Dr. Ing. h.c. F. Porsche Aktiengesellschaft
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.