Granted Patent
Utility
US 5,032,474 · App. 07/299,228
Aluminium batteries
Inventor:
John A. Hunter
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Jan 23, 1989
Inventor
John A. Hunter
Assignee (at issue)
Alcan International Limited
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.