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发明名称
Threaded connections
摘要
申请公布号
US3355192(A)
申请公布日期
1967.11.28
申请号
US19650494996
申请日期
1965.08.09
申请人
DRILCO OIL TOOLS, INC.
发明人
JR. JOSEPH A. KLOESEL,;CREWS SAM T.
分类号
E21B17/042;F16L15/06
主分类号
E21B17/042
代理机构
代理人
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地址
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