Granted Patent
Utility
US 6,488,747 · App. 09/591,217
Pressure swing adsorption with axial or centrifugal compression machinery
Inventors:
Bowie G. Keefer, Denis J. Connor
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Jun 12, 2000
Inventors
Bowie G. Keefer
Denis J. Connor
Assignee (at issue)
QuestAir Technologies 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.