Granted Patent
Utility
US 6,746,018 · App. 10/080,259
Shaft seal
Inventors:
Michael L. Lewis, Christopher A. Carrigan, Erwin R. Carrigan, Steven H. Griggs
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Feb 21, 2002
Inventors
Michael L. Lewis
Christopher A. Carrigan
Erwin R. Carrigan
Steven H. Griggs
Assignee (at issue)
EMERSON POWER TRANSMISSION MANUFACTURING
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.