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发明名称
Hook
摘要
申请公布号
US2613981(A)
申请公布日期
1952.10.14
申请号
US19470745475
申请日期
1947.05.02
申请人
REGAN FORGE AND ENGINEERING COMPANY
发明人
MINOR BURT S.
分类号
B66C1/34;E21B19/04
主分类号
B66C1/34
代理机构
代理人
主权项
地址
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