Granted Patent
Utility
US 5,589,757 · App. 08/480,828
Apparatus and method for step-charging batteries to optimize charge acceptance
Inventor:
James K. Klang
Patented Case
View Patent ↗
Granted: Dec 31, 1996
Filed: Jun 7, 1995
Inventor
James K. Klang
Assignee (at issue)
GNB Battery Technologies, 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.