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US1748623A
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Method of nitriding steel articles
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US1719927A
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Band-saw guide
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US1734044A
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Thickener
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US1741666A
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Open-hearth furnace
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US1748217A
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Steel
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US1744374A
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Manufacture of stainless iron
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US1654057A
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Hot top
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US1641326A
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Process of remelting chromium steel scrap
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US1736321A
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Process of forging axles
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US1770930A
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Oven lining
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US1665515A
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Sink-head top
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US1692532A
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Wash or coating for ingot molds
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US1624177A
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Mechanism for operating ore-bin gates
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US1675646A
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Method of zinc coating ferrous metal
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US1744418A
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Manufacture of steel
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US1720383A
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Ingot and mold for making same
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US1711997A
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Sheet-opening method
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US1737785A
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Rolling mill
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US1615608A
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Roller-nozzle guide for bar mills
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US1624187A
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Metal-lath-attaching clip
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