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发明名称
Compressional wave transmission devices
摘要
申请公布号
GB658177(A)
申请公布日期
1951.10.03
申请号
GB19470017027
申请日期
1947.06.27
申请人
WESTERN ELECTRIC COMPANY INCORPORATED
发明人
分类号
G10K11/22;H03H9/36
主分类号
G10K11/22
代理机构
代理人
主权项
地址
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