Circa 1931 , he became vice-chairman of the Deutsche Glastechnische Gesellschaft ( German Technical Glass Society ) .
Mey was active in a number of professional organizations and held offices in them .
Circa 1931 , Mey became vice-chairman of the Deutsche Glastechnische Gesellschaft ( German Technical Glass Society ) .
Mey was active in a number of professional organizations and held offices in them .