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发明名称
摘要
申请公布号
JPH029158(B2)
申请公布日期
1990.02.28
申请号
JP19850015174
申请日期
1985.01.29
申请人
TAKENAKA KOMUTEN KK;SEKISO KK
发明人
SHINOZAKI MAMORU;OOSHITA TOSHUKI;OOKOCHI KATSUTOSHI;KAMATA SEIZO
分类号
E21B33/13
主分类号
E21B33/13
代理机构
代理人
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