In 1955, Mellet began refereeing in the
Swiss Super League, the top flight of football in Switzerland. In 1959, he was appointed as a
FIFA referee. In 1964, Mellet was appointed as a referee for the
1964 European Nations' Cup, where he officiated the
third place play-off between
Hungary and
Denmark. Mellet retired from refereeing in 1964. ==References==