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ES131428A1
|
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Improvements in crucible furnaces for the melting of metals.
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ES105209A1
|
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Improvements in the devices used in stereoscopic cinematography.
|
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GB127066A
|
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Improvements in Electric Steel Manufacture.
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|
GB110409A
|
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Improvements in Electric Heating & Melting Furnaces.
|
|
GB106152A
|
|
Improvements in Electric Furnace Electrodes.
|
|
US1093892A
|
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Method of improving pig-iron.
|
|
GB191216001A
|
|
Method of Improving the Physical Nature of Pig Iron.
|
|
GB191202597A
|
|
Method of Reducing the Smoke from Steel Reheating Furnaces and the like.
|
|
GB191202081A
|
|
Improvements in Electric Metallurgical Furnaces.
|
|
GB191126184A
|
|
Improvements in Metallurgical Furnaces.
|
|
GB191117179A
|
|
Improvements in the Manufacture of Electric Steel.
|
|
GB191100672A
|
|
Electric Motor Reversing Switches.
|
|
GB191100674A
|
|
Improvements in Electric Metallurgical Furnaces.
|
|
GB190710185A
|
|
A Method of Annealing, Heating, or Melting Oxidisable Materials without Causing Oxidation thereof.
|
|
CA272646A
|
|
Stereoscopic kinematography device
|
|
CA199012A
|
|
Electric heating and melting furnance
|
|
CA272645A
|
|
Stereoscopic kinematography device
|
|
CA383943A
|
|
Moulding box
|
