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发明名称
MEASURING METHOD FOR DEPTH OF BORE HOLE
摘要
申请公布号
JPH04110606(A)
申请公布日期
1992.04.13
申请号
JP19900226602
申请日期
1990.08.30
申请人
MAEDA CORP
发明人
HATANAKA KATSUYA
分类号
G01C7/06;G01B3/04
主分类号
G01C7/06
代理机构
代理人
主权项
地址
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