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发明名称
YERALTI HAM YAGININ TEKRAR ELDE EDILMESI
摘要
申请公布号
TR18177(A)
申请公布日期
1978.02.26
申请号
TR19690018177
申请日期
1969.04.14
申请人
PERCIVAL CHEVELAND KEITH
发明人
分类号
E21B43/16;E21B43/24;(IPC1-7):E21B43/16
主分类号
E21B43/16
代理机构
代理人
主权项
地址
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