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发明名称
PIPE JOINT
摘要
申请公布号
GB8811628(D0)
申请公布日期
1988.06.22
申请号
GB19880011628
申请日期
1988.05.17
申请人
SATO KENSETSU KK;CHICHIBU CONCRETE KOGYO KK
发明人
分类号
E21D9/06;E03F3/04;E21B17/04;E21B17/08;F16L21/02
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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