Granted Patent
Utility
US 4,415,425 · App. 06/358,078
Conductor roll contour
Inventor:
Charles A. Schacht
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Mar 15, 1982
Inventor
Charles A. Schacht
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.