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发明名称
électrode positive d'arc électrique à effet beck
摘要
申请公布号
FR1059155(A)
申请公布日期
1954.03.23
申请号
FRD1059155
申请日期
1952.06.20
申请人
C. CONRADTY
发明人
分类号
H05B31/10
主分类号
H05B31/10
代理机构
代理人
主权项
地址
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