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发明名称
Improvements in or relating to high frequency compressional-wave transmission and receiving apparatus
摘要
申请公布号
GB644288(A)
申请公布日期
1950.10.11
申请号
GB19450031493
申请日期
1945.11.22
申请人
RAYTHEON MANUFACTURING COMPANY
发明人
分类号
G10K11/00
主分类号
G10K11/00
代理机构
代理人
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地址
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