Granted Patent
Utility
US 4,474,669 · App. 06/155,272
Can-making lubricant
Inventors:
Leon L. Lewis, Michael Murray
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Jun 2, 1980
Inventors
Leon L. Lewis
Michael Murray
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.