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发明名称
ULTRASONIC DISTANCE MEASURING
摘要
申请公布号
GB1599291(A)
申请公布日期
1981.09.30
申请号
GB19770013193
申请日期
1978.05.26
申请人
GULLICK DOBSON LTD
发明人
分类号
E21F17/00;G01S15/88;(IPC1-7):G01S15/10
主分类号
E21F17/00
代理机构
代理人
主权项
地址
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