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发明名称
Soil coring apparatus
摘要
申请公布号
US2868019(A)
申请公布日期
1959.01.13
申请号
US19530373072
申请日期
1953.08.07
申请人
BULL ALMOND D
发明人
BULL ALMOND D.
分类号
主分类号
代理机构
代理人
主权项
地址
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