Granted Patent
Utility
US 6,056,804 · App. 09/106,124
High frequency rotary pressure swing adsorption apparatus
Inventors:
Bowie G. Keefer, Christopher R. McLean
Patented Case
View Patent ↗
Granted: May 2, 2000
Filed: Jun 29, 1998
Inventors
Bowie G. Keefer
Christopher R. McLean
Assignee (at issue)
Questor Industries 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.