Granted Patent
Utility
US 4,237,455 · App. 05/923,352
Safety device for lifting magnets
Inventors:
Philip Beckley, John Mildoon
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Jul 10, 1978
Inventors
Philip Beckley
John Mildoon
Assignee (at issue)
British 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.