Granted Patent
Utility
US 4,279,743 · App. 06/094,521
Air-sparged hydrocyclone and method
Inventor:
Jan D. Miller
Patented Case
View Patent ↗
Granted: Jul 21, 1981
Filed: Nov 15, 1979
Inventor
Jan D. Miller
Assignee (at issue)
THE UNIVERSITY OF UTAH
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.