Granted Patent
Utility
US 6,575,693 · App. 09/887,009
Labyrinth seal for rotating shaft
Inventors:
Joerg Pross, Thomas Kramer, Ulrich Waltke
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Jun 25, 2001
Inventors
Joerg Pross
Thomas Kramer
Ulrich Waltke
Assignee (at issue)
ALSTOM (Switzerland) Ltd
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.