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发明名称
Dispositif électronique discriminateur pour installations de télécommunication.
摘要
申请公布号
CH300209(A)
申请公布日期
1954.07.15
申请号
CHD300209
申请日期
1950.03.29
申请人
SCOWEN,FRANK
发明人
SCOWEN,FRANK
分类号
H03K17/54;H04J1/04;H04Q11/02
主分类号
H03K17/54
代理机构
代理人
主权项
地址
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