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SKF AB
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Svenska Kullagerfabriken AB
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Publication of FR497269ApublicationCriticalpatent/FR497269A/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
C21D9/0043—Muffle furnaces; Retort furnaces
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FR497269A1917-06-181919-03-18Perfectionnements aux fours
ExpiredFR497269A
(fr)