Granted Patent
Utility
US 4,723,656 · App. 07/058,059
Battery package with battery condition indicator means
Inventors:
Charles E. Kiernan, Robert L. Milanese
Patented Case
View Patent ↗
Granted: Feb 9, 1988
Filed: Jun 4, 1987
Inventors
Charles E. Kiernan
Robert L. Milanese
Assignee (at issue)
Duracell 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.