Granted Patent
Utility
US 6,832,891 · App. 10/268,422
Device for sealing turbomachines
Inventors:
Emil Aschenbruck, Hildegard Ebbing, Andreas Kleinefeldt, Klaus Mohr
Patented Case
View Patent ↗
Granted: Dec 21, 2004
Filed: Oct 10, 2002
Inventors
Emil Aschenbruck
Hildegard Ebbing
Andreas Kleinefeldt
Klaus Mohr
Assignee (at issue)
Man Turbomaschinen 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.