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发明名称
OBTAINING PHASE OF FUNDAMENTAL FREQUENCY
摘要
申请公布号
GB8300131(D0)
申请公布日期
1983.02.09
申请号
GB19830000131
申请日期
1983.01.05
申请人
POLYTECHNIC MARINE LTD
发明人
分类号
G01S1/32;(IPC1-7):G01S1/32
主分类号
G01S1/32
代理机构
代理人
主权项
地址
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