Granted Patent
Utility
US 6,680,140 · App. 09/127,785
Maintenance-free industrial type vented cell storage battery
Inventors:
Thierry Berlureau, Jean-Louis Liska
Patented Case
View Patent ↗
Granted: Jan 20, 2004
Filed: Aug 3, 1998
Inventors
Thierry Berlureau
Jean-Louis Liska
Assignee (at issue)
ALCATEL
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.