Granted Patent
Utility
US 5,530,337 · App. 08/447,035
Battery cluster charger having a backup charging system
Inventor:
Yoshio Yamamoto
Patented Case
View Patent ↗
Granted: Jun 25, 1996
Filed: May 22, 1995
Inventor
Yoshio Yamamoto
Assignee (at issue)
NEC CORPORATION
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.