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发明名称
Electro-mechanical wave filter devices
摘要
申请公布号
GB463848(A)
申请公布日期
1937.04.07
申请号
GB19360020528
申请日期
1936.07.24
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H03H9/50
主分类号
H03H9/50
代理机构
代理人
主权项
地址
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