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C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
C23D17/00—De-enamelling
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FR512596A1915-03-021916-04-12Procédé et appareil pour séparer des matières d'espèces différentes
ExpiredFR512596A
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