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发明名称
Circuit controlling switch
摘要
申请公布号
US2442766(A)
申请公布日期
1948.06.08
申请号
US19450581593
申请日期
1945.03.08
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
GARVIN JOHN S.
分类号
F42D1/05;H01H13/72
主分类号
F42D1/05
代理机构
代理人
主权项
地址
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