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CA164123A
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Method of supplying electric furnaces
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US1043090A
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Manufacture of steel.
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CA150628A
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Process of refining liquid steel
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US983043A
|
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Method of supplying electric furnaces with polyphase currents.
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CA128230A
|
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Steel refining process
|
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CA133711A
|
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Method of supplying furnaces wth polyphase current
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GB190929597A
|
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Improvements in the Hardening of Projectiles and other Articles of Steel.
|
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US1066810A
|
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Thermal treatment of metal in electrically-heated furnaces.
|
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US956699A
|
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Crown or cover of electric furnaces.
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US921228A
|
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Electric furnace for metallurgical purposes.
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US885745A
|
|
Electric furnace.
|
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GB190523402A
|
|
Improvements in Electric Furnaces.
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|
GB190514333A
|
|
Improvements in Electric Furnaces.
|
|
GB190513690A
|
|
Improvements in Electric Furnaces.
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