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发明名称
VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON UNVERFAELSCHTEN WASSERPROBEN BEIM NIEDERBRINGEN EINES BRUNNENS DURCH BOHREN
摘要
申请公布号
DE3941763(A1)
申请公布日期
1990.12.13
申请号
DE19893941763
申请日期
1989.12.18
申请人
GROTENDORST, GERHARD, 4280 BORKEN, DE
发明人
GROTENDORST, GERHARD, 4280 BORKEN, DE
分类号
E03B3/18;E21B43/08;E21B49/08;G01N1/10;G01N1/14
主分类号
E03B3/18
代理机构
代理人
主权项
地址
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