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发明名称
Improvements relating to electric selective switching apparatus
摘要
申请公布号
GB393366(A)
申请公布日期
1933.06.08
申请号
GB19320003921
申请日期
1932.02.10
申请人
LEONARD DENMAN BLYTH;LESLIE BERNARD JUBY
发明人
分类号
H03J9/00
主分类号
H03J9/00
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代理人
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