Granted Patent
Utility
US 6,367,807 · App. 09/175,092
Labyrinth seal assembly
Inventor:
Robert E. Rockwood
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Oct 19, 1998
Inventor
Robert E. Rockwood
Assignee (at issue)
Environamics Corporation
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.