Granted Patent
Utility
US 4,767,684 · App. 07/087,265
Method of chargeability improvement and reduced corrosion for sodium-sulfur cells
Inventor:
Carl R. Halbach
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Aug 19, 1987
Inventor
Carl R. Halbach
Assignee (at issue)
Ford Motor 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.