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发明名称
Electric control circuits
摘要
申请公布号
US1809625(A)
申请公布日期
1931.06.09
申请号
US19210504933
申请日期
1921.10.03
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
GRIGGS ELMER V.
分类号
H02J7/08
主分类号
H02J7/08
代理机构
代理人
主权项
地址
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