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发明名称
Appareil de couplage à cylindres de contact en charbon artificiel
摘要
申请公布号
FR874314(A)
申请公布日期
1942.08.04
申请号
FRD874314
申请日期
1941.07.30
申请人
C. CONRADTY
发明人
分类号
H01B1/04;H01H1/025;H01H1/027;H01H1/36
主分类号
H01B1/04
代理机构
代理人
主权项
地址
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