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发明名称
Hinge joint for anchor jacks
摘要
申请公布号
US1765248(A)
申请公布日期
1930.06.17
申请号
US19290385941
申请日期
1929.08.14
申请人
SOULEYRET FRED C
发明人
SOULEYRET FRED C.
分类号
E21C29/08
主分类号
E21C29/08
代理机构
代理人
主权项
地址
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