Granted Patent
Utility
US 5,042,964 · App. 07/464,613
Flash smelting furnace
Inventor:
Gregory M. Gitman
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: Jan 2, 1990
Inventor
Gregory M. Gitman
Assignee (at issue)
American Combustion, 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.