Granted Patent
Utility
US 4,650,730 · App. 06/734,431
Battery separator
Inventors:
Joseph T. Lundquist, Christian B. Lundsager, Nigel I. Palmer, Howard J. Troffkin
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: May 16, 1985
Inventors
Joseph T. Lundquist
Christian B. Lundsager
Nigel I. Palmer
Howard J. Troffkin
Assignee (at issue)
W. R. Grace & Co.
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.