Granted Patent
Utility
US 6,345,954 · App. 09/253,253
Dry gas seal contamination prevention system
Inventors:
Thair J. Al-Himyary, Jonathan D. Carlson
Patented Case
View Patent ↗
Granted: Feb 12, 2002
Filed: Feb 19, 1999
Inventors
Thair J. Al-Himyary
Jonathan D. Carlson
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.