Dipl.-Ing. Hans Backe. BacDipl-Ing. Hans Backe. dipl.-ing.Gerhard Bernecker. von dipl.-ing. F. Wecke . dipl-ing.Thomas Krist. Dipl. Ing. Thomas Krist. Dipl.-Ing.Horst Witte. Dipl.-Ing.Paul Eckstein.