Granted Patent
Utility
US 4,479,442 · App. 06/469,019
Venturi burner nozzle for pulverized coal
Inventors:
Daniel C. Itse, Craig A. Penterson
Patented Case
View Patent ↗
Granted: Oct 30, 1984
Filed: Feb 23, 1983
Inventors
Daniel C. Itse
Craig A. Penterson
Assignee (at issue)
Riley Stoker Corporation
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.