Granted Patent
Utility
US 4,642,047 · App. 06/755,831
Method and apparatus for flame generation and utilization of the combustion products for heating, melting and refining
Inventor:
Grigory M. Gitman
Patented Case
View Patent ↗
Granted: Feb 10, 1987
Filed: Jul 15, 1985
Inventor
Grigory 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.