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发明名称
Electrical circuit
摘要
申请公布号
US2535257(A)
申请公布日期
1950.12.26
申请号
US19450591747
申请日期
1945.05.03
申请人
BERGER FRANCE B
发明人
BERGER FRANCE B.
分类号
G06G7/20;H03G7/02;H03G11/00
主分类号
G06G7/20
代理机构
代理人
主权项
地址
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