Granted Patent
Utility
US 5,656,920 · App. 08/425,181
Method and apparatus for charging a lead-acid battery
Inventors:
Jing-Yih Cherng, James K. Klang
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Apr 19, 1995
Inventors
Jing-Yih Cherng
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.