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发明名称
Dispositif de préchauffage électrique pour four à électrodes et bain de sel
摘要
申请公布号
FR868184(A)
申请公布日期
1941.12.23
申请号
FRD868184
申请日期
1940.12.18
申请人
DEUTSCHE GOLD- UND SILBER-SCHEIDEANSTALT VORMALS ROESSLER
发明人
分类号
H05B3/60
主分类号
H05B3/60
代理机构
代理人
主权项
地址
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