Granted Patent
Utility
US 5,246,798 · App. 07/842,786
Lead and sulphuric acid accumulator, separator for a lead/sulphuric acid accumulator and process to reduce the formation of dark deposits in a lead/sulphuric acid accumulator
Inventor:
Claudia Yaacoub
Patented Case
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Granted: Sep 21, 1993
Filed: Feb 26, 1992
Inventor
Claudia Yaacoub
Assignee (at issue)
Grace GmbH
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.