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发明名称
Probenehmer zur Entnahme von Bodenproben
摘要
申请公布号
DE1258806(B)
申请公布日期
1968.01.11
申请号
DE1961ST18100
申请日期
1961.07.19
申请人
STICHTING WATERBOUWKUNDIG LABORATORIUM
发明人
BELD ROELOF VAN DE
分类号
E21B49/02
主分类号
E21B49/02
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代理人
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