Granted Patent
Utility
US 4,430,913 · App. 06/360,905
Cut-off and face machine
Inventor:
Calvin C. Williamson
Patented Case
View Patent ↗
Granted: Feb 14, 1984
Filed: Mar 23, 1982
Inventor
Calvin C. Williamson
Assignee (at issue)
Kaiser 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.