Granted Patent
Utility
US 5,052,312 · App. 07/629,547
Cyclone furnace for hazardous waste incineration and ash vitrification
Inventors:
John M. Rackley, Stanley J. Vecci
Patented Case
View Patent ↗
Granted: Oct 1, 1991
Filed: Dec 18, 1990
Inventors
John M. Rackley
Stanley J. Vecci
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.