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发明名称
Improvements in or relating to echo-sounding apparatus
摘要
申请公布号
GB730206(A)
申请公布日期
1955.05.18
申请号
GB19520019790
申请日期
1952.08.06
申请人
THE SUBMARINE SIGNAL COMPANY (LONDON) LIMITED
发明人
CHAMBERS GEOFFREY EDWARD;RING RONALD HENRY
分类号
G01S1/72
主分类号
G01S1/72
代理机构
代理人
主权项
地址
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