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发明名称
Shear pin rope socket
摘要
申请公布号
US3031218(A)
申请公布日期
1962.04.24
申请号
US19580779198
申请日期
1958.12.09
申请人
ELLIS MORRIS L
发明人
ELLIS MORRIS L.
分类号
E21B17/05;F16G11/00
主分类号
E21B17/05
代理机构
代理人
主权项
地址
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