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发明名称
Beveled wall hook
摘要
申请公布号
US2511140(A)
申请公布日期
1950.06.13
申请号
US19440560168
申请日期
1944.10.24
申请人
YOUNG CLARENCE P
发明人
YOUNG CLARENCE P.
分类号
E21B31/18
主分类号
E21B31/18
代理机构
代理人
主权项
地址
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