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US1282475A
|
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Manufacture of carbon electrodes.
|
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GB191114612A
|
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Improvements in and relating to the Reduction of Metal Ores.
|
|
US1054873A
|
|
Reducing ore by means of solid, carbonaceous material.
|
|
GB191101134A
|
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Improvements in and relating to the Reduction of Ore.
|
|
GB191011807A
|
|
Improved Method of Reducing Metals from their Ores.
|
|
US1065890A
|
|
Process of producing metals.
|
|
CA144391A
|
|
Ore reduction
|
|
CA97476A
|
|
Kiln for generating gas and roasting
|
|
US822394A
|
|
Revolving kiln for generating gas.
|
|
GB190515838A
|
|
Improvements in Rotary Kilns for Generation of Gas, Roasting and the like.
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