Granted Patent
Utility
US 4,256,719 · App. 06/110,767
Process for the combined manufacture of chlorinated hydrocarbons and sodium bicarbonate
Inventor:
Eleonoor Van Andel
Patented Case
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Granted: Mar 17, 1981
Filed: Jan 9, 1980
Inventor
Eleonoor Van Andel
Assignee (at issue)
Akzo N.V.
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.