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发明名称
Selective control system
摘要
申请公布号
US1816755(A)
申请公布日期
1931.07.28
申请号
US19300443909
申请日期
1930.04.12
申请人
GENERAL ELECTRIC COMPANY
发明人
WOODWORTH JOHN L.
分类号
H01H61/02
主分类号
H01H61/02
代理机构
代理人
主权项
地址
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