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发明名称
ELECTRIC SWITCHGEAR
摘要
申请公布号
CA373883(A)
申请公布日期
1938.05.17
申请号
CAD373883
申请日期
申请人
GEORGE ETHELBERT WHITEHEAD
发明人
GEORGE ETHELBERT WHITEHEAD
分类号
主分类号
代理机构
代理人
主权项
地址
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