Heribert BlensHeribert Blens was a German politician of the Christian Democratic Union and former member of the German Bundestag.LifeBlens became a member of the CDU as early as 1955, and from 1969 to 1987 he was a member of the Cologne City Council. He was also one of the mayors of Cologne from 1975 to 1987. Blens had a doctorate in law. After working at the administrative courts in Cologne and Düsseldorf, he was a member of the German Bundestag from 1983 to 2002.