|
CA188104A
|
|
Electric furnace
|
|
CA183367A
|
|
Electric smelting furnace
|
|
CA164690A
|
|
Electric furnace
|
|
CA182543A
|
|
Electric furnace
|
|
CA164689A
|
|
Door for electric furnaces
|
|
CA182542A
|
|
Electric furnace
|
|
GB191501213A
|
|
Improvements in or relating to the Manufacture of Steel.
|
|
GB191325171A
|
|
Improvements in or relating to Electric Furnaces.
|
|
CA129495A
|
|
Apparatus for the distillation of wood
|
|
GB190713254A
|
|
Process and Apparatus for Treating Ores.
|
|
GB190619870A
|
|
Improved Process of Treating Wood for the Extraction of Turpentine.
|
|
GB190619712A
|
|
Improved Process and Apparatus for the Treatment of Ores.
|
|
CA102800A
|
|
Electric furnace
|
|
CA97755A
|
|
Metallurgical process
|
|
CA111050A
|
|
Ore treatment
|
|
GB190328399A
|
|
Improvements in Magnetic Ore Separator.
|
|
CA226318A
|
|
Electric furnace
|
