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C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
C21C3/00—Manufacture of wrought-iron or wrought-steel
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FR992972D1944-10-181944-10-18Procédé de fabrication d'acier et spécialement d'acier fin, par puddlage ou affinage interrompu et décarburation
ExpiredFR992972A
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