Granted Patent
Utility
US 5,945,804 · App. 08/919,284
Method and device for controlling the voltage across individual cells in a battery
Inventors:
Magnus Hansson, Bjorn Frannhagen
Patented Case
View Patent ↗
Granted: Aug 31, 1999
Filed: Aug 28, 1997
Inventors
Magnus Hansson
Bjorn Frannhagen
Assignee (at issue)
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
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.