|
US1040639A
|
|
Clay-sieving machine.
|
|
CA88289A
|
|
Calcium carbide manufacture
|
|
CA88288A
|
|
Electrical smelting
|
|
CA100424A
|
|
Electric furnace
|
|
CA100423A
|
|
Process of electrical heating
|
|
CA100425A
|
|
Smelting process
|
|
US760057A
|
|
Process of electrically smelting materials.
|
|
US760312A
|
|
Process of making calcium carbid.
|
|
CA73901A
|
|
Electric furnace
|
|
CA73230A
|
|
Process of obtaining volatile elements
|
|
CA73899A
|
|
Electrode
|
|
CA73605A
|
|
Process of reducing sodium compound
|
|
CA61560A
|
|
Electric furnace
|
|
CA24603A
|
|
Electric furnace and method of operating the same
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