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发明名称
Improvements in and relating to systems for locating objects by sound
摘要
申请公布号
GB461396(A)
申请公布日期
1937.02.16
申请号
GB19360010362
申请日期
1936.04.08
申请人
THE BRITISH THOMSON-HOUSTON COMPANY, LIMITED
发明人
分类号
G01S1/72
主分类号
G01S1/72
代理机构
代理人
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