Granted Patent
Utility
US 4,380,491 · App. 06/296,384
Spray nozzle assembly for spray dryer
Inventors:
Ira L. Joy, Neal B. Humphreys
Patented Case
View Patent ↗
Granted: Apr 19, 1983
Filed: Aug 26, 1981
Inventors
Ira L. Joy
Neal B. Humphreys
Assignee (at issue)
Combustion Engineering, 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.