Granted Patent
Utility
US 4,615,375 · App. 06/722,589
Continuous casting mold friction monitor
Inventors:
John Eric Bower, Ronald S. Vranka, Mark H. Mahler
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Apr 12, 1985
Inventors
John Eric Bower
Ronald S. Vranka
Mark H. Mahler
Assignee (at issue)
United States Steel Corporation
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.