Granted Patent
Utility
US 4,885,924 · App. 06/541,346
Method of forming containers
Inventors:
Paul Charles Claydon, Martin F. Ball
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Sep 26, 1983
Inventors
Paul Charles Claydon
Martin F. Ball
Assignee (at issue)
Metal Box p.l.c.
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.