Granted Patent
Utility
US 4,309,948 · App. 06/176,224
Solids feed nozzle for fluidized bed
Inventor:
Edward A. Zielinski
Patented Case
View Patent ↗
Granted: Jan 12, 1982
Filed: Aug 7, 1980
Inventor
Edward A. Zielinski
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.