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经营范围
发明名称
Perfectionnements aux écho-sondes.
摘要
申请公布号
BE573704(A1)
申请公布日期
1959.04.01
申请号
BE19580573704
申请日期
1958.12.08
申请人
THE MARCONI SOUNDING DEVICE COMPANY LIMITED
发明人
分类号
(IPC1-7):G01H
主分类号
(IPC1-7):G01H
代理机构
代理人
主权项
地址
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