Granted Patent
Utility
US 5,581,171 · App. 08/258,154
Electric vehicle battery charger
Inventors:
Charles S. Kerfoot, Patricia A. O'Donnell, David L. Schantz, Jr.
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Jun 10, 1994
Inventors
Charles S. Kerfoot
Patricia A. O'Donnell
David L. Schantz, Jr.
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.