Granted Patent
Utility
US 6,581,675 · App. 09/547,253
Method and apparatus for continuous casting of metals
Inventor:
Donald G. Harrington
Patented Case
View Patent ↗
Granted: Jun 24, 2003
Filed: Apr 11, 2000
Inventor
Donald G. Harrington
Assignee (at issue)
ALCOA 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.