Judgment of the Court of 13 November 1973 in Joined Cases 63 and 69/72 : Firma Wilhehn Werhahn Hansamiihle, Firma Kurt Kampffmeyer Miihlenvereinigung KG., Firma Ludwigshafener Walzmiihle Erling KG., Firma Kurt Kampffmeyer Miihlenvereinigung KG. as successors to the rights and obligations of Firma Duisburger Miihlenwerke AG., Firma Heinrich Auer Miihlenwerke KG. a.A., Firma Kurt Kampffmeyer Miihlenvereinigung KG., as successors to the rights and obligations of Firma Siiddeutsche Miihlenwerke AG., and Firma Pfalzische Miihlenwerke GmbH v. Council of the European Communities and the Commission of the European Communities