Brand Ady + (1961 - 1972)

Stocker Kurt + (1973 - 1976)

Imholz Alois + (1977 - 1978)

Brand Edwin (1979 - 1982)

Stadler Erwin + (1983 - 1987)

Nauer Franz (1988 - 1989)

Gamma Robert (1990 - 1995)

Schürch Hans (1996 - 2003)

Gamma Odilo (2004-2010)

Bless Gregor (2011 - 2015)

Planzer-Nauer Daniela (ab 2016)