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发明名称
DRILLING TOOL FOR ROCK DRILL THAT USE MOLD RELEASING AGENT
摘要
申请公布号
JPS53102203(A)
申请公布日期
1978.09.06
申请号
JP19770017436
申请日期
1977.02.18
申请人
TOHO KINZOKU KK
发明人
SAKAMOTO HIROMICHI
分类号
E21B17/042
主分类号
E21B17/042
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代理人
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地址
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