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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
C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
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FR40804D1931-09-221931-09-22Perfectionnements aux fours pour le recuit et le traitement thermique des métaux
ExpiredFR40804E
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