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发明名称
AUTOMATIC ADJUSTMENT TYPE BIT BASKET
摘要
申请公布号
JPS63194094(A)
申请公布日期
1988.08.11
申请号
JP19880006716
申请日期
1988.01.14
申请人
INCO LTD
发明人
AREN ETSUCHI KEIBUN
分类号
E21B19/16;E21B19/18
主分类号
E21B19/16
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代理人
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