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Electrical Research Products Inc
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Electrical Research Products Inc
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Publication of FR726471ApublicationCriticalpatent/FR726471A/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
C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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FR726471D1930-11-121931-11-12Procédé et appareil perfectionnés pour le traitement thermique d'objets
ExpiredFR726471A
(fr)