Granted Patent
Utility
US 6,257,315 · App. 09/332,994
Casting steel strip
Inventor:
John Anthony Spink
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Jun 15, 1999
Inventor
John Anthony Spink
Assignees (at issue)
ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO., LTD.
BHP Steel (JLA) Pty. Ltd.
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.