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发明名称
Process and device for electric arc welding in a protective atmosphere
摘要
申请公布号
US2791673(A)
申请公布日期
1957.05.07
申请号
US19550490074
申请日期
1955.02.23
申请人
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
发明人
ARNAUD ROBERT
分类号
B23K9/16
主分类号
B23K9/16
代理机构
代理人
主权项
地址
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