C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
148/24, 75/74
C22C 5/02 (2006.01) C22F 1/14 (2006.01)
Patent
CA 1335630
Alliage d'or comprenant au moins les éléments suivants : Au 74,4 à 94,5 % Fe 5 à 25 % Ni 0,5 à 0,6 % qui, après traitement thermique, prend une coloration bleutée en raison de l'oxydation des éléments non précieux contenus dans l'alliage.
608435
Ludwig Muller S.a.
Marks & Clerk
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