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发明名称
PILE SPLICE
摘要
申请公布号
US3585803(A)
申请公布日期
1971.06.22
申请号
USD3585803
申请日期
1968.11.15
申请人
ESSO PRODUCTION RESEARCH CO.
发明人
JOHN J. BARDGETTE
分类号
E02D5/52;E21B17/046;F16L25/06;(IPC1-7):02D5/52;16L21/00
主分类号
E02D5/52
代理机构
代理人
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地址
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