Granted Patent
Utility
US 5,232,283 · App. 07/959,871
Apparatus for mixing concurrently, downwardly flowing fluids
Inventors:
Kenneth W. Goebel, Vishnu A. Patel, Earl L. Whittington, Jr.
Patented Case
View Patent ↗
Granted: Aug 3, 1993
Filed: Oct 13, 1992
Inventors
Kenneth W. Goebel
Vishnu A. Patel
Earl L. Whittington, Jr.
Assignee (at issue)
The M.W. Kellogg 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.