Granted Patent
Utility
US 5,773,955 · App. 08/815,449
Battery charger apparatus
Inventor:
William B. Hall
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Mar 11, 1997
Inventor
William B. Hall
Assignee (at issue)
NORTHROP GRUMMAN 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.