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发明名称
WERKWIJZE VOOR HET VASTZETTEN VAN EEN SERIE PIJPEN IN EEN BOORGAT.
摘要
申请公布号
NL166752(B)
申请公布日期
1981.04.15
申请号
NL19690005727
申请日期
1969.04.14
申请人
DRESSER INDUSTRIES INC., DALLAS, TEXAS, VER. ST. V. AM.
发明人
分类号
C04B28/26;C09K8/20;(IPC1-7):E21B33/14;C04B13/20
主分类号
C04B28/26
代理机构
代理人
主权项
地址
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