Granted Patent
Utility
US 5,169,736 · App. 07/727,563
Electrochemical secondary element
Inventors:
Rainer Bittihn, Detley Hoge, Rudolf Herr
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: Jul 9, 1991
Inventors
Rainer Bittihn
Detley Hoge
Rudolf Herr
Assignee (at issue)
Varta Batterie Aktiengesellschaft
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.