Granted Patent
Utility
US 4,683,647 · App. 06/849,184
Post seal and method of manufacture for lead-acid batteries
Inventors:
William B. Brecht, Sudhan S. Misra
Patented Case
View Patent ↗
Granted: Aug 4, 1987
Filed: Apr 7, 1986
Inventors
William B. Brecht
Sudhan S. Misra
Assignee (at issue)
C & D Power Systems, 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.