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发明名称
ANCHOR-PACKER
摘要
申请公布号
US3438438(A)
申请公布日期
1969.04.15
申请号
USD3438438
申请日期
1967.05.22
申请人
MARTIN B. CONRAD
发明人
MARTIN B. CONRAD
分类号
E21B33/126;(IPC1-7):E21B23/04;E21B23/06
主分类号
E21B33/126
代理机构
代理人
主权项
地址
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