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Hevi Duty Electric Co
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Hevi Duty Electric Co
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Publication of FR701237ApublicationCriticalpatent/FR701237A/fr
C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
C21D11/00—Process control or regulation for heat treatments
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FR701237D1929-09-031930-08-27Perfectionnements aux fours pour le traitement calorifique des métaux
ExpiredFR701237A
(fr)