Granted Patent
Utility
US 4,724,896 · App. 07/012,482
Apparatus and method for improving the surface characteristics of continuously cast metal ingot
Inventors:
Robert M. Rose, Jeffrey J. Wiesner, Clarence J. Cox
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Feb 9, 1987
Inventors
Robert M. Rose
Jeffrey J. Wiesner
Clarence J. Cox
Assignee (at issue)
Aluminum Company of America
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.