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发明名称
摘要
申请公布号
JPS5410323(B2)
申请公布日期
1979.05.04
申请号
JP19740087580
申请日期
1974.08.01
申请人
发明人
分类号
B25D17/00;B25D17/08;B25D17/26;E21B1/00;E21B1/26;E21B6/00;E21B17/03
主分类号
B25D17/00
代理机构
代理人
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地址
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