Granted Patent
Utility
US 5,578,390 · App. 08/315,317
Electrochemical cell label with integrated tester
Inventor:
John F. Hughen
Patented Case
View Patent ↗
Granted: Nov 26, 1996
Filed: Sep 29, 1994
Inventor
John F. Hughen
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.