| Nom | Prénom | Mandat | Power |
|---|---|---|---|
| LENDVAY | BEATRIX | 1956-05 | |
| SCHREINER | SOPHIE | 1983-08 | Partner with Unlimited and Joint Liability |
| SCHREINER | KONRAD | 1985-10 | Partner with Unlimited and Joint Liability |
| SCHREINER | ARTHUR | 1992-02 | Partner with Unlimited and Joint Liability |