- Factory engineering manager electron tube division General Electric Company-Telefunken, Berlin, 1966—1970, Ulm, Germany, 1970—1979. Factory engineering manager Videocolor GMBH, 1979—1980. Education and training manager German Society Quality, Frankfurt, since 1980, lecturer quality technical, since 1977.
Chairman committee statistical methods European Organization for Quality, since 1983. Member technical committee statistical methods International Organization Standardization and Deutsches Institute fur Normung, since 1980, chairman subcommittee on statistical methods, since 1989. Member of American Society Quality Control, Deutsche Gesellschaft Qualitat, European Organization Quality, Deutsche Statistische Gesellschaft, Verein Deutscher Ingenieure, Deutsche Physikalische Gesellschaft.
1966 - 1970
1970 - 1979
1979 - 1980