Granted Patent
Utility
US 5,961,122 · App. 08/967,117
Split mechanical face seal and method of assembly thereof
Inventor:
Joseph A. Marsi
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: Nov 12, 1997
Inventor
Joseph A. Marsi
Assignee (at issue)
Flowserve Management Company
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.