Granted Patent
Utility
US 5,376,471 · App. 07/989,019
Aluminium battery with electrolyte circulation means
Inventors:
John A. Hunter, Robert P. Hamlen
Patented Case
View Patent ↗
Granted: Dec 27, 1994
Filed: Apr 22, 1993
Inventors
John A. Hunter
Robert P. Hamlen
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.