Granted Patent
Utility
US 6,022,639 · App. 08/742,547
Zinc anode for an electochemical cell
Inventor:
Lewis F. Urry
Patented Case
View Patent ↗
Granted: Feb 8, 2000
Filed: Nov 1, 1996
Inventor
Lewis F. Urry
Assignee (at issue)
Eveready Battery Company, Inc.
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.