Granted Patent
Utility
US 6,471,212 · App. 09/156,758
Brush seal
Inventors:
Olaf Dierker, Harald Romer, Heinrich Roth
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Sep 18, 1998
Inventors
Olaf Dierker
Harald Romer
Heinrich Roth
Assignee (at issue)
ALSTOM Holdings
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.