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发明名称
Improved vane-type soil testing apparatus
摘要
申请公布号
US2907204(A)
申请公布日期
1959.10.06
申请号
US19560599668
申请日期
1956.07.23
申请人
GIBBS HAROLD J
发明人
GIBBS HAROLD J.
分类号
E02D1/02
主分类号
E02D1/02
代理机构
代理人
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