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经营范围
发明名称
Improvements in or relating to apparatus for transmitting and receiving compressional wave energy
摘要
申请公布号
GB632285(A)
申请公布日期
1949.11.21
申请号
GB19430010566
申请日期
1943.06.29
申请人
SUBMARINE SIGNAL COMPANY
发明人
分类号
G10K11/34
主分类号
G10K11/34
代理机构
代理人
主权项
地址
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