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发明名称
Apparatus for determining soil and hydrostatic pressure
摘要
申请公布号
US2336500(A)
申请公布日期
1943.12.14
申请号
US19420445092
申请日期
1942.05.29
申请人
OSTERBERG JOHJ O
发明人
OSTERBERG JOHJ O.
分类号
E02D1/08
主分类号
E02D1/08
代理机构
代理人
主权项
地址
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