Granted Patent
Utility
US 4,535,615 · App. 06/454,576
Process and apparatus using ultra-filtration in the production of can shells
Inventor:
Gerald J. Ebben
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Dec 30, 1982
Inventor
Gerald J. Ebben
Assignee (at issue)
American Can Company
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.