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经营范围
发明名称
Process for electric arc welding in a protective atmosphere
摘要
申请公布号
US2764668(A)
申请公布日期
1956.09.25
申请号
US19530330399
申请日期
1953.01.09
申请人
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
发明人
DUMOULIN LOUIS
分类号
B23K9/067
主分类号
B23K9/067
代理机构
代理人
主权项
地址
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