Granted Patent
Utility
US 5,340,041 · App. 07/981,569
Welded rotating annular passage segment for coal pulverizers with replaceable vanes and adjustable passage port area
Inventors:
Thomas L. Henning, Robert J. Giammaruti
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Nov 25, 1992
Inventors
Thomas L. Henning
Robert J. Giammaruti
Assignee (at issue)
The Babcock & Wilcox 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.