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发明名称
WEAR DETECTING APPARATUS
摘要
申请公布号
GB8505858(D0)
申请公布日期
1985.04.11
申请号
GB19850005858
申请日期
1985.03.07
申请人
DIAMANT BOARD DOWNHOLE TOOLS LTD
发明人
分类号
主分类号
代理机构
代理人
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