Mandeville and Schweitzer
Electro-metal smelting furnace with taphole arranged at the bottom
 The invention concerns an electro-metal smelting furnace with at least one taphole located at the bottom with which hole is associated a closure equipped with a drive. 
Mannesmann DeMag AG
F
F27D
inventional
Erich Klaus V. Manfred Ludger Ralf Josef Hannsgeorg Helmut
Heinrich Ploetz Walter Zangs Schneider Otto Bauer Meyer