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发明名称
VERFAHREN ZUR NIEDERBRINGUNG VON BOHRROHREN DURCH NICHTBINDIGES ERDREICH
摘要
申请公布号
DD237345(A1)
申请公布日期
1986.07.09
申请号
DD19850276459
申请日期
1985.05.17
申请人
VEB KOMBINAT TIEFBAU BERLIN,,,,DD
发明人
PRZYGODZINSKI,SIEGFRIED,DD
分类号
E02D7/22;(IPC1-7):E02D7/22
主分类号
E02D7/22
代理机构
代理人
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地址
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