Granted Patent
Utility
US 4,749,199 · App. 06/564,254
Seal assembly including a sealing ring having internal lubricant passageways
Inventor:
Michael Gresh
Patented Case
View Patent ↗
Granted: Jun 7, 1988
Filed: Dec 22, 1983
Inventor
Michael Gresh
Assignee (at issue)
Elliott Turbomachinery Co., Inc.
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.