Granted Patent
Utility
US 5,660,946 · App. 08/674,420
Sealed lead-acid cells and batteries having an expandable cover
Inventors:
William H. Kump, Deborah Huke, Edward Mattan
Patented Case
View Patent ↗
Granted: Aug 26, 1997
Filed: Jul 2, 1996
Inventors
William H. Kump
Deborah Huke
Edward Mattan
Assignee (at issue)
GNB Technologies, 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.