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发明名称
METHOD AND APPARATUS FOR MEASURING GROUND POTENTIAL OF UNDERGROUND EMBEDDED MATERIAL
摘要
申请公布号
JPH03202763(A)
申请公布日期
1991.09.04
申请号
JP19890342490
申请日期
1989.12.29
申请人
OSAKA GAS CO LTD
发明人
KINOSHITA AKIRA
分类号
G01N17/02;G01N27/26
主分类号
G01N17/02
代理机构
代理人
主权项
地址
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