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发明名称
ECHO SOUNDER FOR MEASUREMENT OF DISTANCE IN A NUMBER OFMEASURING LOCATIONS
摘要
申请公布号
PL115372(B1)
申请公布日期
1981.03.31
申请号
PL19780206165
申请日期
1978.04.17
申请人
发明人
分类号
G01S;G01S5/18;(IPC1-7):G01S5/18
主分类号
G01S
代理机构
代理人
主权项
地址
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