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US1583933A
|
|
Method of separating metal from the material containing it
|
|
US1518854A
|
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Method of operating blast furnaces
|
|
US1507740A
|
|
Method of operating blast furnaces and similar furnaces
|
|
US1478439A
|
|
Blast-furnace construction
|
|
US1281585A
|
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Apparatus for subjecting subdivided solid materials to the action of a current of gases.
|
|
US1105799A
|
|
Process of operating ore-concentrating tables.
|
|
CA115630A
|
|
Process of stopping underground flows of waters from entering excavations
|
|
US900683A
|
|
Process for stopping or sealing off underground flows of water into mine-workings, &c.
|
|
CA95226A
|
|
Process of separating minerals
|
|
US838626A
|
|
Separating-tank.
|
|
US825909A
|
|
Process for distilling off the oil from oil-coated fines.
|
|
US809959A
|
|
Process of separating minerals.
|
|
US796660A
|
|
Fire-door draft-check.
|
|
US796661A
|
|
Automatic governor for steam-boiler furnaces.
|
|
US828411A
|
|
Automatic regulator device for steam-boiler furnaces.
|
|
US1105912A
|
|
Concentrating-table.
|
|
US772519A
|
|
Boiler-furnace draft-governor.
|
|
US646224A
|
|
Keyboard mechanism for type-writers.
|
|
CA267245A
|
|
Metal separation
|
