Granted Patent
Utility
US 4,613,550 · App. 06/770,945
Venting system for electric storage batteries
Inventors:
Joseph J. Jergl, William H. Kump
Patented Case
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Granted: Sep 23, 1986
Filed: Aug 30, 1985
Inventors
Joseph J. Jergl
William H. Kump
Assignee (at issue)
GnB
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.