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发明名称
Expansible earth anchor
摘要
申请公布号
US2217271(A)
申请公布日期
1940.10.08
申请号
US19390279286
申请日期
1939.06.15
申请人
HANDEL CHARLES E
发明人
HANDEL CHARLES E.
分类号
E02D5/80
主分类号
E02D5/80
代理机构
代理人
主权项
地址
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