Granted Patent
Utility
US 6,515,449 · App. 09/990,223
Battery with lead/nugget protection insert
Inventors:
Shawn Thomas, Ronald O'Connell
Patented Case
View Patent ↗
Granted: Feb 4, 2003
Filed: Nov 21, 2001
Inventors
Shawn Thomas
Ronald O'Connell
Assignees (at issue)
NGK SPARK PLUG CO., LTD.
NTK Powerdex, 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.