Granted Patent
Utility
US 6,834,859 · App. 10/355,570
Labyrinth grease hub seal
Inventor:
Christopher Tones
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Jan 31, 2003
Inventor
Christopher Tones
Assignee (at issue)
GARLOCK SEALING TECHNOLOGIES LLC
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.