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经营范围
发明名称
Improvements in and relating to tar-changing switches for regulating electrical apparatus
摘要
申请公布号
GB636276(A)
申请公布日期
1950.04.26
申请号
GB19470027997
申请日期
1947.10.20
申请人
WILLEM SMIT & CO.'S TRANSFORMATORENFABRIEK N.V.
发明人
分类号
H01H1/16;H01H9/00
主分类号
H01H1/16
代理机构
代理人
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