Granted Patent
Utility
US 5,232,117 · App. 07/867,821
Reusable metal drum
Inventor:
James A. Hale
Patented Case
View Patent ↗
Granted: Aug 3, 1993
Filed: Apr 13, 1992
Inventor
James A. Hale
Assignee (at issue)
Greif Bros. 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.