Granted Patent
Utility
US 4,118,856 · App. 05/528,809
Bi-directional hydrodynamic shaft seal method
Inventors:
Dean R. Bainard, Dennis N. Denton
Patented Case
View Patent ↗
Granted: Oct 10, 1978
Filed: Dec 2, 1974
Inventors
Dean R. Bainard
Dennis N. Denton
Assignee (at issue)
Garlock, 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.