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发明名称
Improvements in or relating to electric control device
摘要
申请公布号
GB522348(A)
申请公布日期
1940.06.14
申请号
GB19390008553
申请日期
1939.03.17
申请人
STACKPOLE CARBON COMPANY
发明人
分类号
H01C10/32
主分类号
H01C10/32
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代理人
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