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发明名称
Soil testing device
摘要
申请公布号
US2280592(A)
申请公布日期
1942.04.21
申请号
US19390290475
申请日期
1939.08.16
申请人
MIEUX JR FREDERIC LE
发明人
JR. FREDERIC LE MIEUX,
分类号
E02D1/02
主分类号
E02D1/02
代理机构
代理人
主权项
地址
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