Granted Patent
Utility
US 6,474,115 · App. 09/716,098
Shaft seal system with leak management
Inventors:
A. Duane Preston, Jon R. Turner
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Nov 17, 2000
Inventors
A. Duane Preston
Jon R. Turner
Assignee (at issue)
Chart 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.