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发明名称
Apparatus for the formation of concrete piles in situ
摘要
申请公布号
US1848301(A)
申请公布日期
1932.03.08
申请号
US19290367942
申请日期
1929.06.03
申请人
ANNABEL BARNES
发明人
分类号
E02D7/30
主分类号
E02D7/30
代理机构
代理人
主权项
地址
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