Granted Patent
Utility
US 5,526,938 · App. 08/320,077
Vertical arrangement fluidized/non-fluidized bed classifier cooler
Inventors:
David L. Kraft, Michael J. Szmania
Patented Case
View Patent ↗
Granted: Jun 18, 1996
Filed: Oct 7, 1994
Inventors
David L. Kraft
Michael J. Szmania
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.