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发明名称
摘要
申请公布号
JPS5925071(B2)
申请公布日期
1984.06.14
申请号
JP19800004066
申请日期
1980.01.17
申请人
TORI SUTEITO OIRUTSUURU IND INC
发明人
GARII AARU JONSON
分类号
E21B7/28;E21B10/34;E21B21/00;E21B21/12
主分类号
E21B7/28
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代理人
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