Employed at Sèvres 1883-1929
According to Christie's auction info: Leonard Gebleux was employed at Sèvres 1883-1929 and head of the decorating atelier from 1884-1928. (http://www.christies.com/lotfinder/LotDetailsPrintable.aspx?intObjectID=4694310); Sotheby's catalogues also list same info on LG