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经营范围
发明名称
RADIO FREQUENCY FILTER
摘要
申请公布号
IE21902(L)
申请公布日期
1954.04.21
申请号
IE19530000568
申请日期
1953.10.19
申请人
STANDARD TELEPHONES AND CABLES LTD.;DONALD D. GRIEG;HERBERT F. ENGELMANN
发明人
分类号
H01P1/20;(IPC1-7):H01P1/20
主分类号
H01P1/20
代理机构
代理人
主权项
地址
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