Granted Patent
Utility
US 4,245,761 · App. 05/789,943
Continuous casting
Inventors:
Ian J. Hazlehurst, David C. Willard
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Apr 22, 1977
Inventors
Ian J. Hazlehurst
David C. Willard
Assignee (at issue)
Foseco Trading A.G.
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.