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BOCHU MER VER FU R GUSSSTAHLFA
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BOCHU MER VER FU R GUSSSTAHLFA
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Publication of FR893731ApublicationCriticalpatent/FR893731A/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
C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
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FR893731D1943-05-061943-05-06Procédé de fabrication de pièces élastiques en acier
ExpiredFR893731A
(fr)