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经营范围
发明名称
Improvements in electric furnaces
摘要
申请公布号
GB528857(A)
申请公布日期
1940.11.08
申请号
GB19390013614
申请日期
1939.05.06
申请人
FRANK BERNHARD DEHN
发明人
分类号
H05B3/66
主分类号
H05B3/66
代理机构
代理人
主权项
地址
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